/ Dictionary / Index N nonsyllabic: Meaning and Definition of Find definitions for: non•syl•lab•ic Pronunciation: (non"si-lab'ik), [key] — adj. not forming a syllable or the nucleus of a syllable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: nonsyllabic (Thesaurus) nonsupport nontarget Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language