Permissible
Part of speech: adjective
Definition: That is permitted.
Tolerable
Part of speech: adjective
Definition: Capable of being borne, tolerated or endured; bearable or endurable.Moderate in degree; mediocre; passable, acceptable or so-so.Such as to be tolerated or countenanced; permissible; allowable.In fair health; passably well.
Part of speech: adverb
Definition: tolerably; passably; moderately.
Example sentence: Life would be tolerable but for its amusements.