More about doughty
Doughty “steadfastly courageous,” despite spelling and pronunciation, is not related to doubt, doughy, or dowdy. Instead, it comes from Old English dohtig “worthy,” which is equivalent to modern English dow “to be able” or “to thrive, prosper” plus two suffixes: -th, which indicates a noun of action (as in birth) or quality (as in warmth), and -y “characterized by, inclined to” (as in dreamy and juicy). In this way, doughty literally translates from Old English as “worthiness-y,” which is an awkward mouthful. Doughty was first recorded in English before 1000 a.d.