資料來源 : pyDict

無風的,平穩的

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Windless \Wind"less\, a.
   1. Having no wind; calm.

   2. Wanting wind; out of breath.

資料來源 : WordNet®

windless
     adj : without or almost without wind; "he prefers windless days
           for playing golf"