adj.
Pronunciation: ri- ' dau ̇ -t ə -b ə l
Function: adjective
Etymology: Middle English redoutable, from Anglo-French, from reduter to dread, from re- + duter to doubt
Date: 15th century
1 : causing fear or alarm : FORMIDABLE
2 : ILLUSTRIOUS , EMINENT broadly : worthy of respect
– re · doubt · ably \ -bl ē \ adverb