- formidable
- adjective1)
a formidable curved dagger
Syn:intimidating, forbidding, daunting, disturbing, alarming, frightening, disquieting, brooding, awesome, fearsome, ominous, foreboding, sinister, menacing, threatening, dangerousAnt:pleasant-looking, comforting2)a formidable task
Syn:onerous, arduous, taxing, difficult, hard, heavy, laborious, burdensome, strenuous, back-breaking, uphill, Herculean, monumental, colossal; demanding, tough, challenging, exacting; formal exigent; archaic toilsomeAnt:easy3)a formidable pianist
Syn:capable, able, proficient, adept, adroit, accomplished, seasoned, skillful, skilled, gifted, talented, masterly, virtuoso, expert, knowledgeable, qualified; impressive, powerful, mighty, terrific, tremendous, great, complete, redoubtable; informal mean, wicked, deadly, nifty, crack, ace, magic, crackerjackAnt:weak
Thesaurus of popular words. 2014.