Origin: Latin suffix -ive
Unimaginative has 4 different meanings across 1 category:
deficient in originality or creativity; lacking powers of invention
"a sterile ideology lacking in originality"
"unimaginative development of a musical theme"
"uninspired writing"
dealing only with concrete facts
lacking spontaneity or originality or individuality
"stereotyped phrases of condolence"
"even his profanity was unimaginative"
Not imaginative.