Synonym word of in efficacy:

bitter pill, blind alley, blow, blunder, bringdown, bummer, bust, calamity, defeat, disaster, discouragement, downer, downfall, drag, dud, error, failure, false alarm, faux pas, fiasco, fizzle, flash in the pan, impasse, inefficacy, lemon, miscalculation, mischance, m


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Synonyms:  A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Popular