(adj.)

ordinary or dull

syn: humdrum, plain

ant: extraordinary, exciting

(adj.)

in good faith

syn: genuine, legitimate

ant: false

(adj.)

accidental; nonessential

syn: inorganic

ant: intrinsic

(adj.)

fertile or productive

syn: prolific

ant: sterile

(verb)

to stray or turn aside from a course

syn: swerve

ant: align