unimaginative vs sterile

unimaginative and sterile both are adjectives.

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

As adjectives, unimaginative and sterile are synonyms defined as:

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

Other synonyms of unimaginative include uninspired, uninventive.

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