/ Dictionary / Index W weaken: Meaning and Definition of Find definitions for: weak•en Pronunciation: (wē'kun), [key] — v.t. to make weak or weaker. to change (a speech sound) to an articulation requiring less effort, as from geminate to nongeminate or from stop to fricative. —v.i. to become weak or weaker. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: weaken (Thesaurus) weak accumulation point weak ending Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language