(transitive) To make smaller. / (intransitive) To become less or smaller. / (transitive) To lessen the authority or dignity of; to put down; to degrade; to abase; to weaken; to nerf (in gaming).

simple past tense and past participle of diminish

lessened, reduced / made to seem less important, impressive, or valuable / (music) reduced by a semitone

becoming smaller

present participle of diminish

A diminishment.

plural of diminishment

The act of diminishing; reducing in size, quantity, or quality.

Third-person singular simple present indicative form of diminish

plural of diminishing