diminish 5 antonyms and opposites of diminish. Verb — To make something smaller, weaker, or less important. Synonyms for diminish decline ebb ooze abase abate belittle besmall bring down embase cut decrease decrement foreshorten lessen lilliputianize lower minimize mince reduce shrink smallify Antonyms for diminish improve repair renovate wax augment ← Back to the full definition of diminish
