资料来源 : pyDict

不戴帽子的

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Hatless \Hat"less\, a.
   Having no hat.

资料来源 : WordNet®

hatless
     adj : not wearing a hat; "stood hatless in the rain with water
           dripping down his neck" [ant: {hatted}]