beardless vs unfeathered

beardless

adj
  • Lacking a beard (a defined patch of feathers below the beak). 

  • Destitute of an awn. 

  • Not having reached puberty or manhood; youthful. 

  • Lacking a beard. 

unfeathered

adj
  • Lacking feathers 

How often have the words beardless and unfeathered occurred in a corpus of books? (source: Google Ngram Viewer )