Synonyms of permissible

2 Syllables
lawful, kosher, jural, licit, okay, proper, legit, venial
3 Syllables
endorsed, bearable, sanctioned, approved, card-carrying, permitted
4 Syllables
concedable, authorized, defensible, excusable, acceptable, legalized, unforbidden, admissible, remittable, tolerated, tolerable
5 Syllables
unprohibited, legitimate, exculpatory, vindicatory