Synonyms and Antonyms of knock out
to use up all the physical energy of <the entire staff knocked itself out getting the project finished on time> Synonyms break, burn out, bust, do in, do up, drain, fag, fatigue, frazzle, harass, kill, exhaust, outwear, tire, tucker (out), wash out, wear, wear out, wearyRelated Words debilitate, enervate, enfeeble, sap, waste, weakenNear Antonyms activate, energize, invigorate, rejuvenate, strengthen, vitalize; relax, rest, unwind
Seen and Heard
What made you want to look up knock out? Please tell us where you read or heard it (including the quote, if possible).