redoubtable Definition

formidable, illustrious, respected, glorious, unnerving, alarming, proud, fearsome, fierce, gadfly, dreadful, dreaded, lethal, daunting, frightening, awesome, terrible, fearful, challenging, indomitable, indefatigable, stalwart, irrepressible, estimable, wily, pugnacious, feisty, imperious, inimitable, erstwhile, implacable, irascible, fearless, intrepid, obdurate, unflappable, tireless, doughty, cunning, shrewd, peerless, sainted, waspish, latterday, nonpareil, stolid, garrulous, canny, saintly, avuncular, rumbustious, voluble, imperturbable, oleaginous, adroit, octogenarian, highborn, legendary, vulpine, superannuated, spritely, sprightly, pluckiest, steely, genial, bibulous, masterly, hapless, rotund, dandyish, obsequious, ablest, whiggish, ageless, rebarbative, bewigged, matronly, eminent, clubbable, perspicacious, unimprovable, supercilious, sagacious, stouthearted, sphinxlike, charismatic, diffident, effervescent, leonine, splendid, sedulous, lordly, schoolmasterly, stakhanovite, trenchant, maidenly, erudite, debonair, bewhiskered, bumptious,