sterile vs unimaginative

sterile and unimaginative both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sterile	No	Yes	No	No
unimaginative	No	Yes	No	No

As adjectives, sterile and unimaginative are synonyms defined as:

sterile and unimaginative: deficient in originality or creativity; lacking powers of invention

Other synonyms of sterile include uninspired, uninventive.

sterile (adjective)	unimaginative (adjective)
incapable of reproducing	lacking spontaneity or originality or individuality
free of or using methods to keep free of pathological microorganisms	dealing only with concrete facts
deficient in originality or creativity; lacking powers of invention	deficient in originality or creativity; lacking powers of invention