log
GreekVariants
Related Roots
About This Root
From Greek logos (word, speech, reason, study). Perhaps the most versatile Greek root in English. As a suffix -logy it names entire fields of knowledge: biology, psychology, archaeology, chronology. As a standalone it gives logic, dialogue, catalog, eulogy, analogy, and apology — all involving structured speech or reasoning.
Associated Words
analogous
Similar or comparable to something else in certain respects
analogy
A comparison highlighting similarity between two things, used for explanation
anthropologist
An expert in the study of human beings and their societies
apologetic
Expressing regret or apology; offering a defense of beliefs
apology
An expression of regret for wronging someone; a formal defence of a belief
archaeological
Relating to archaeology
astrological
Relating to astrology or the study of celestial influence on human affairs
biologic
Relating to biology or living organisms; a drug derived from living organisms
biological
Relating to biology or living things; related by birth
biologically
In a biological manner; with regard to biology
biologist
A scientist who studies living organisms
cardiologist
A doctor specializing in heart diseases
catalog
A systematic list of items or products; to classify into a catalogue
catalogue
A systematic list of items with descriptions; to list items systematically
chronological
Arranged in the order in which events occurred
dermatologist
A doctor specializing in skin diseases
dialog
A conversation between people; spoken lines in a story; to negotiate
dialogue
A conversation between people; spoken lines in drama or fiction
eclogue
A short pastoral poem about rural or shepherd life
ecological
Relating to ecology or the natural environment
ecologist
A scientist who studies ecology
ecology
The study of relationships between organisms and their environment
embryological
Of or relating to embryology
epilogue
A closing section or speech at the end of a literary work or play
etymology
The study of the origin and historical development of words
eulogistic
Expressing high praise or admiration
eulogize
To praise someone highly and eloquently, especially in a formal speech
eulogy
A formal speech of praise, especially delivered at a funeral
genealogy
The study of family histories and lineages; a family tree
herpetologist
A scientist who studies reptiles and amphibians
log
A thick piece of cut wood; an official record of events; to cut down trees
logic
The study of correct reasoning; a rational and sensible way of thinking
logical
Based on clear, valid reasoning; reasonable and sensible
logistics
The planning and management of the supply and movement of goods or personnel
meteorologist
A scientist who studies weather and atmospheric phenomena
microbiological
Relating to microbiology
microbiologist
A scientist specializing in microbiology
microbiology
The scientific study of microorganisms
monologue
A long speech by one person in a play or conversation
neologism
A newly coined word or phrase
nonbiological
Not biological; not based on living matter or blood relation
pathological
Relating to disease or mental disorder; compulsive and irrational
philology
The scholarly study of historical languages and texts
physiological
Relating to the normal functions of living organisms
physiology
The study of the functions and processes of living organisms
prologue
An introductory section at the beginning of a literary or dramatic work
psychological
Relating to the mind, emotions, and behavior
psychologist
A specialist in the study or practice of psychology
psychology
The scientific study of the mind and behavior; mental characteristics
rhapsody
An ecstatic expression of feeling; a free-form musical composition
tautological
Involving needless repetition of the same meaning
theological
Of or relating to theology
trilogy
A set of three related literary, film, or dramatic works