ob-
Latinagainst, toward, in the way of
Prefix · means "against, toward, in the way of"
Same-family forms
Roots often paired with ob-
Associated Words · 44
offer
to present for acceptance; a proposal or bid
object
a physical thing; a goal; to oppose or disagree
observe
To watch carefully; to remark; to follow rules or customs
obtain
To get or acquire something through effort
obvious
Easily seen or understood; self-evident
observation
The act of watching carefully; a remark based on what is noticed
objective
A goal or target; not influenced by personal bias; based on facts
observer
A person who watches or monitors something
obligation
A duty or binding commitment one is required to fulfil
obstacle
Something that blocks or hinders progress
objection
A statement expressing disagreement or opposition; a legal protest in court
omit
To leave out or exclude something
obsession
A compulsive, unhealthy preoccupation with something or someone
oblige
To compel by duty; to do someone a favour
observatory
A building for observing stars, planets, or weather
obsolete
No longer in use; outdated
obstruction
Something that blocks progress; the act of hindering
obsessive
Thinking about something excessively; a person with an obsession
obese
Extremely overweight in a way that is harmful to health
obliterate
To destroy or remove completely, leaving no trace
omission
The act of leaving something out; something left out or neglected
obstruct
To block or hinder progress or movement
obituary
A published notice or article about someone who has recently died
observable
Able to be seen or noticed; a measurable physical property