/ Dictionary / Index S sicken: Meaning and Definition of Find definitions for: sick•en Pronunciation: (sik'un), [key] — v.t., v.i. to make or become sick. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sicken (Thesaurus) sick day sickener Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language