permitable vs tolerable

permitable

adj
  • permissible 

tolerable

adj
  • Such as to be tolerated or countenanced; permissible; allowable. 

  • Capable of being borne, tolerated or endured; bearable or endurable. 

  • Moderate in degree; mediocre; passable, acceptable or so-so. 

  • In fair health; passably well. 

adv
  • tolerably; passably; moderately. 

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