cap
Latintake, seize, hold
About This Root
The root cap comes from the Latin verb capere, "to take, to seize, to grasp." Picture a hand closing around something — that physical act of grabbing hold is the seed from which a huge family of English words grew. Romans used capere for catching prey, seizing a city, taking in food, and grasping an idea. From this one verb, English inherited words about receiving, capturing, containing, and even conceiving.
The reason this root looks so different from word to word is that Latin reshaped it depending on prefixes and tense. capere gives the base form cap (capable, capacity). But the past participle was captus, which gives capt/cept (captive, accept, concept). And when capere combined with a prefix, the short vowel weakened: a turned into i, so cap became cip (anticipate, participate, recipient). The lips also reshaped it: p hardened into pt before the -t ending, producing cept. Finally, words that traveled through French softened -cept into -ceive spelled, -ceiv in derivatives (receive → reception, conceive → conception).
Prefixes tell you what direction the taking goes:
- ac- (toward) + cept → accept: take something toward yourself, receive it
- con- (together) + cept/ceive → concept / conceive: take ideas and grasp them together in the mind
- re- (back) + ceive → receive: take something back / in
- per- (through) + ceive → perceive: take in through the senses
- de- (down, away) + ceive → deceive: take someone in by leading them astray
- ex- (out) + cept/empt → except / exempt: take something out of a group
- anti- (before) + cip → anticipate: take hold of something before it happens
- inter- (between) + cept → intercept: take something between its start and end
Notice the steady logic: the prefix supplies the direction, and cap/cept/ceiv always supplies the act of taking. One quirky member is conceit — the same con- + cept, but the "idea you grasped" turned into "the too-flattering idea you hold of yourself." And exempt kept the rare -empt spelling (from eximere) instead of the usual -cept, a reminder that the family is large but not perfectly regular.
Think of capturing a butterfly in your hand — that closing grasp is cap (take/seize). Every cap/cept/ceiv/cip word is some form of taking: you accept (take toward you), conceive (take an idea), receive (take back), except (take out). The prefix just tells you which way it goes.
Core Words Deep Dive
The few words from this family worth telling in full — one by one.
ac- (a form of ad-, "toward") + cept ("take") = take something toward yourself. The most everyday member of the family: when you accept a gift, an offer, or an apology, you are literally "taking it in" rather than pushing it away. The -cept here is the past-participle form of capere, the same piece you see in concept and except.
con- ("together") + cept ("take") = something taken or gathered *together* in the mind. A concept is what you get when your mind grasps many impressions and bundles them into one idea. Note the spelling pair: concept uses -cept (from captus), while its verb conceive uses -ceive — same root, two surface forms of capere.
Same con- + capere as concept, but along the French -ceive path. It carries two senses that share one image of "taking in." Mentally, to conceive is to take an idea into the mind (conceive a plan). Biologically, to conceive is for a woman's body to "take in" and start a new life (conceive a child). One root, two kinds of receiving — and its noun is conception, swapping -ceive back to -cept.
ex- ("out") + cept ("take") = take something *out* of a group. When you say "everyone except Tom," you are mentally lifting Tom out of the set. Its cousin exempt does the same job but kept a rarer spelling (from eximere): to exempt someone is to "take them out" of an obligation, like taxes. Both are the act of removal — one general, one official.
Related Roots
These two look identical at the start but come from different Latin words. cap (from capere) means "take, seize": capture, accept, capable. capit (from caput) means "head": capital, captain, decapitate. So capable ("able to take on") and capital ("the head city/money") only LOOK related. Quick test: about grabbing/holding something → cap; about a head, top, or chief → capit.
cap and ten/tain both touch on "holding," but differently. cap (capere) is about the act of taking or seizing — grabbing something. ten/tain (tenēre) is about keeping a grip once you have it — holding, retaining. Quick test: the moment of grabbing → cap (capture, seize); keeping your hold over time → ten (retain, contain, maintain).
Associated Words · 163
accept
To receive, especially with a consent, with favour, or with approval; Something that is accepted
acceptability
The quality of being acceptable or satisfactory
acceptable
Good enough to be approved or accepted
acceptably
In a satisfactory manner
acceptance
The act of receiving or agreeing to something willingly; approval
accepted
Widely recognized or approved
anticipate
To expect something before it happens; to act in advance
anticipated
Expected or scheduled to happen
anticipation
Excitement or eagerness about something expected; advance preparation
cap
A close-fitting hat; a lid or cover; an upper limit
capability
The power or ability to do or achieve something
capable
Having the ability or skill needed to do something; competent
capably
In a competent and skillful manner
capacious
Having a large amount of space inside; roomy
capacitance
The ability of an electrical circuit to store electric charge, measured in farads
capacitor
An electronic component that stores electrical energy in an electric field
capacity
The maximum amount that can be held; ability to do something; a role
capsule
A small sealed container for medicine; a spacecraft compartment
caption
A title or description for an image; subtitles on screen
captivate
To charm or fascinate completely
captivating
Extremely attractive and holding one's full attention
captivation
The state of being charmed or fascinated
captivator
A person or thing that captivates others
captive
A prisoner; held captive and unable to escape
captive-bred
Bred and raised in captivity, not in the wild
captive-breeding
Breeding animals in captivity to preserve species
capture
To seize by force; to record or preserve; the act of capturing
cash
Money in coins and banknotes; to exchange a cheque for money
catching
Infectious or contagious; attractively appealing
chase
To pursue someone or something; the act of pursuit
conceit
Excessive pride in oneself; an elaborate literary metaphor
conceited
Excessively proud of oneself; vain and arrogant
conceive
To form an idea in the mind; to become pregnant
concept
An abstract or general idea
conception
The forming of an idea; the beginning of pregnancy
conceptual
Relating to concepts or ideas
conceptually
In terms of concepts or abstract ideas
deceit
The act of misleading or tricking someone; dishonest behavior
deceitful
Deliberately misleading or dishonest
deceive
To trick or mislead someone into believing something false
deceived
Misled into believing something false
deceiver
A person who tricks or misleads others
deception
The act of misleading someone; a trick or dishonest scheme
deceptive
Likely to mislead or create a false impression
deceptively
In a misleading or false-impression-giving way
emancipate
To free someone from oppression or slavery
emancipated
Freed from restrictions or control; liberated
emancipation
The act of freeing someone from slavery or oppression
emancipator
A person who frees others from bondage or oppression
emancipatory
Tending to bring about freedom or liberation
emanciptator
Variant of emancipator; one who frees others
encapsulate
To enclose in a capsule; to summarize concisely
encapsulated
Enclosed or summarized concisely
encapsulation
The act of enclosing; grouping data and methods in computing
escape
To get free from danger; the act of escaping
escaped
Having broken free from confinement
escapee
A person who has escaped from prison or a dangerous place
escapism
The tendency to escape from reality through fantasy
escapist
A person who escapes from reality; tending to avoid reality
except
not including; other than; used to show an exception
exception
A case that does not follow the general rule
exceptionable
Likely to cause objection or disapproval
exceptional
Unusually good or outstanding; not ordinary
exceptionally
To an unusually high or remarkable degree
exceptive
Relating to or forming an exception
exempt
Free from an obligation; to release someone from a duty
exemption
Immunity from a duty or obligation; a tax deduction
handicap
A disadvantage or disability; to place at a disadvantage
handicapped
Having a physical or mental disability; disabled people as a group
high-capacity
Able to hold or process a large amount
ill-conceived
Poorly planned or thought through
imperceptible
Too slight or gradual to be noticed
imperceptibly
In a way too slight to be noticed
incapable
Lacking the ability or skill needed to do something
incapacitate
To deprive someone of their ability to function normally; to disable
incapacity
Lack of ability or legal qualification
incept
To begin or initiate; to take in
inception
The beginning or establishment of something
incipient
In an early stage; just beginning to develop
inconceivable
Impossible to imagine or believe
inconceivably
In a way impossible to imagine or believe
inescapable
Impossible to avoid or escape
inescapably
In a way that cannot be avoided
intercept
To stop or catch something before it reaches its destination; an act of interception
interception
The act of stopping something before it reaches its target
large-capacity
Able to hold a very large amount
long-anticipated
Expected or awaited for a long time
misconceive
To misunderstand or form a wrong idea about something
misconceived
Based on a wrong idea or misunderstanding; badly planned
misconception
A mistaken belief or wrong idea
misperceive
To perceive or interpret incorrectly
misperception
An incorrect perception or understanding
much-anticipated
Eagerly awaited by many people; highly expected
municipal
Of or relating to a city or local government
municipality
A city or district with its own local government
municipally
In a manner relating to local government
occupancy
The act of occupying a place; the period of occupation or tenancy
occupant
A person who lives in or uses a place, or holds a position
occupants
People who live in or occupy a place or position
occupation
A job or profession; military control of a territory
occupational
Relating to one's job or profession
occupied
In use or taken; busy; under foreign military control
occupier
A person or force that occupies a place or territory
occupy
To take up space or time; to live in or seize a place
overcapacity
Excess production capacity beyond what is needed
participants
People who take part in an activity or event
participation
The act of taking part in something
perceivable
Able to be noticed or detected through the senses
perceive
To become aware of something through the senses; to understand or interpret
perceived
Understood or interpreted in a certain way; generally recognized
perceptible
Able to be noticed or detected by the senses
perceptibly
In a noticeable or detectable way
perception
The process of noticing or understanding something; a particular viewpoint
perceptive
Having sharp insight and understanding; quick to notice things accurately
perceptively
In a way that shows keen insight or understanding
perceptiveness
The ability to notice and understand things quickly; keen insight
perceptual
Relating to the process of perceiving through the senses
precept
A rule or principle governing conduct; a guiding maxim
preconceived
Formed beforehand without proper evidence
preconception
A biased opinion formed before having sufficient evidence
preempt
To prevent or replace something by acting first; to forestall
principal
Most important; the head of a school; original sum of money invested or borrowed
principally
Mainly; for the most part
principle
A fundamental belief or rule that guides behavior or reasoning
recapture
To capture again after a loss; the act of doing so
receipt
A document confirming payment received; to acknowledge receipt of payment
receivable
Owed as a debt awaiting payment; a sum of money owed to a business
receive
to get something that is given or sent
received
Widely accepted as correct or standard
receiver
A person who receives something; a device that receives signals
receptacle
A container for storing things; the base of a flower where petals attach
reception
A formal social gathering; the act of receiving; signal quality
receptionist
An employee who greets visitors and answers calls at a front desk
receptive
Willing and open to receiving new ideas or suggestions
receptiveness
The quality of being open and willing to receive new ideas or impressions
receptivity
The willingness or ability to receive and respond to new ideas or stimuli
receptor
A cell protein that binds molecules to trigger responses; a sensory organ
recipe
Instructions for preparing food; a method for achieving a result
recipient
A person who receives something
recuperable
Able to be recovered or restored
recuperate
To recover from illness or exhaustion
recuperation
Gradual recovery of health after illness or injury
recuperative
Helping to restore health or strength
reoccupation
The act of occupying a place again
reoccupy
To take possession of a place again
scapegoat
A person unfairly blamed for others' mistakes; to make someone a scapegoat
self-deception
The act of deceiving oneself; refusing to accept the truth
self-deceptive
Characterized by self-deception
self-perceived
As judged or understood by oneself
self-perception
The way one views one's own character and abilities
susceptible
Likely to be affected or harmed; easily influenced
unacceptability
The state of being unacceptable
unacceptable
Not satisfactory or meeting required standards
unacceptably
To an unacceptable degree
unanticipated
Not expected or predicted beforehand
unexceptionable
Beyond reproach; completely acceptable
unexceptional
Not special; ordinary and unremarkable
unoccupied
Empty, vacant, or not in use
unperceived
Not noticed or detected
unreceptive
Not open or responsive to ideas or suggestions
well-accepted
Widely recognized and approved; 被广泛接受的
well-conceived
Carefully and thoroughly planned; 策划周密的，构思精良的
well-received
Greeted with approval or positive reactions