what is permissable
permissible. 1. 'permissible'. If something is permissible, you are allowed to have it or do it, because it does not break any rules, laws, or conventions. Towing caravans up to 2.30m wide are permissible in Norway.I understood that it was permissible to ask a question.ermissible. 1. 'permissible'. If something is permissible, you are allowed to have it or do it, because it does not break any rules, laws, or conventions. Towing caravans up to 2.30m wide are permissible in Norway. I understood that it was permissible to ask a question.