/ Dictionary / Index O off-the-wall: Meaning and Definition of Find definitions for: off-the-wall Pronunciation: (ôf'u-wôl', of'-), [key] — adj. Informal. markedly unconventional; bizarre; oddball: an unpredictable, off-the-wall personality. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: off-the-wall (Thesaurus) off-the-shelf offtrack Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language