Synonyms of permissible

Adjective

1. permissible (vs. impermissible), allowable, tolerable

usage: that may be permitted especially as according to rule; "permissible behavior in school"; "a permissible tax deduction"

2. permissible, admissible (vs. inadmissible)

usage: that may be accepted or conceded; "a kind of speculation that was permissible in cosmology but inadmissible in medicine"

Definition and meaning of permissible (Dictionary)