From The Collaborative International Dictionary of English v.0.44 [gcide]:
Redoubtable \Re*doubt"a*ble\ (-?*b'l), adjective [F. redoutable, formerly also spelt redoubtable.] Formidable; dread; terrible to foes; as, a redoubtable hero; hence, valiant; -- often in contempt or burlesque. [Written also {redoutable}.]
From WordNet (r) 2.0 [wn]:
adjective
1: inspiring fear; "the formidable prospect of major surgery"; "a tougher and more redoubtable adversary than the heel-clicking, jackbooted fanatic"- G.H.Johnston; "something unnerving and prisonlike about high gray wall" [syn: {formidable}, {unnerving}]
2: having or worthy of pride; "redoubtable scholar of the Renaissance"; "born of a redoubtable family" [syn: {glorious}, {illustrious}, {respected}]
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
40 Moby Thesaurus words for "redoubtable": appalling, astounding, awe-inspiring, awesome, awful, celebrated, dire, direful, distinguished, dread, dreaded, dreadful, eminent, famed, fell, formidable, frightful, ghastly, ghoulish, great, grim, grisly, gruesome, hideous, horrendous, horrible, horrid, horrific, horrifying, illustrious, macabre, morbid, notable, prominent, renowned, schrecklich, shocking, terrible, terrific, tremendous
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