/ Dictionary / Index S sickener: Meaning and Definition of Find definitions for: sick•en•er Pronunciation: (sik'u-nur), [key] — n. something that sickens or disgusts. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sicken sickening 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