circumspect(adj.)
cautious
clairvoyant(adj.)
able to see things that others cannot
claustrophobia(n.)
an abnormal fear of closed or crowded spaces
cliché(n.)
a trite, overused expression
coalesce(v.)
to combine into one
cogent(adj.)
intelligent, viable
collusion(n.)
a conspiracy, a secret agreement
colossus(n.)
an enormous structure
comatose(adj.)
lethargic
commendable(adj.)
worthy of praise
commodious(adj.)
spacious, roomy
compel(v.)
to force
complicit(adj.)
being an accomplice in a wrongful act
compliment(n.)
an expression of esteem or approval
concede(v.)
to give in, to accept
conciliatory(adj.)
agreeable, friendly
concoct(v.)
to make up or invent
concord(n.)
agreement
conduit(n.)
a pipe, passage, channel
confluence(n.)
a convergence, a coming together