/ Dictionary / Index S sunsick: Meaning and Definition of Find definitions for: sun•sick Pronunciation: (sun'sik"), [key] — adj. suffering from mild heat exhaustion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Sunshine State sun sign 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