/ Dictionary / Index I itty-bitty: Meaning and Definition of Find definitions for: it•ty-bit•ty Pronunciation: (it'ē-bit'ē), [key] — adj. Informal. very small; tiny. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: itty-bitty (Thesaurus) itself ITU Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language