ユウ 
いさ.む 
() courage () brave
   
いさましい (adj-i) (1) brave, valiant, gallant, courageous, (2) stirring, vigorous, rousing
いさみあし (n) (1) overeagerness, rashness, (2) forward step-out (in sumo)
いさむ (v5m) to be in high spirits, to be encouraged, to be lively, to cheer up
ゆうかん (adj-na) brave, heroic, gallant
ゆうき (n) courage, bravery, valour, valor, nerve, boldness
ゆうし (n) brave warrior, hero, brave man
ゆうたい (n,vs) bowing out, retiring voluntarily

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Etymologies: 中文字譜 : 説文解字