/ Dictionary / Index K kid stuff: Meaning and Definition of Find definitions for: kid' stuff" Pronunciation: [key] — Informal. Informal. something appropriate only for children. something very easy or simple. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. kidstakes kidvid Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language