permissible, permitted, allowed, admissible, acceptable, legal, lawful, legitimate, licit, within the law, authorized, sanctioned, sanctionable, approved, above board, within accepted bounds, passable, tolerated, tolerable, proper, all right, in order
excusable, pardonable, venial
informal OK, legit, kosher, by the book
British informal pukka
ANTONYMS
forbidden
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