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compound
a substance formed from two or more elements
compulsory
Required by law or rule.
concord
agreement or harmony between people
concurrence
Agreement or simultaneous occurrence.
condensation
Water vapor turning back into liquid form.
conditioning
Training that teaches a person or animal to behave in a certain way.
conductor
material that transmits electricity
confer
To grant or bestow a title or honor.
confirm
to verify that something is true or correct
confirmation
Proof that something is true or valid.
confiscate
To take something away, usually by authority.
conform
To follow rules or standards.
congenial
Friendly and pleasant in nature.
congenital
A condition present from birth.
congestion
An excessive accumulation of something, often traffic.
conglomerate
A large corporation made of diverse companies.
congressional district
An area of a US state that elects one member of the House of Representatives.
conifer
A tree that produces cones.
conjecture
An educated guess or hypothesis.
conscientious
Wishing to do one's work thoroughly.
conscious
aware of and responding to surroundings
consequently
as a result; therefore.
conservation
Protection of natural resources and the environment.
conservative
political ideology
Words selected by Inoh for the TOEFL iBT test. Not an official ETS list. How these words were chosen →