unallowable vs unseemly

unallowable

adj
  • Not allowable 

  • For which an allowance may not be claimed 

unseemly

adv
  • In an unseemly manner. 

adj
  • Inconsistent with established standards of good form or taste. 

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