Permissible

a.

1.

That may be permitted; allowable; admissible.

Adj.	1.	permissible - that may be permitted especially as according to rule; "permissible behavior in school"; "a permissible tax deduction" Antonyms: impermissible - not permitted; "impermissible behavior"
	2.	permissible - that may be accepted or conceded; "a kind of speculation that was permissible in cosmology but inadmissible in medicine"

OK, acceptable, all right, allowed, approved, authorized, bearable, endorsed, excusable, kosher, lawful, legal, legit, legitimate, legitimized, licit, okay, pardonable, permitted, proper, sanctionable, sanctioned, tolerated, unforbidden, unprohibited, venial, warrantable