Words That Rhyme With "Diminish" :
2 syllables:
banish, Benish, brainish, brownish, business, clannish, clownish, Danish, donnish, finis, finish, Finnish, greenish, Guinness, hanish, ines, intis, Janish, kronish, lychnis, minish, pinfish, pinnace, planish, plenish, punish, quickness, quintus, Rhenish, Spanish, swinish, thinnish, tonish, tonnish, townish, tzimmes, vanish, windish
3 syllables:
astonish, baboonish, buffoonish, evanish, eyewitness, nonbusiness, refinish, replenish, unfinished