adj. having knowledge or skill (usu. in a particular area)

n. the quality of being brief or terse

v. to happen at the same time

adj. satisfied, with no desire to change or improve

v. to come up with (a plan)

adj. hopeless and dangerous or fearful

adj. extremely bad

adj. not cautious or prudent; rash

adj. legally void and ineffective

n. highest level or degree

n. a strange habit

adv. somewhat unwillingly

v. to examine carefully and critically

v. to make visible; to reveal

The prefix un- means

The prefix re- means

The prefix com- means