permissible
adjective /pəˈmɪsəbl/
  /pərˈmɪsəbl/
 (formal)- acceptable according to the law or a particular set of rules
- permissible levels of nitrates in water
 - permissible (for somebody) (to do something) It is not permissible for employers to discriminate on grounds of age.
 
Oxford Collocations Dictionaryverbs- be
 - consider something
 
- perfectly
 - constitutionally
 - legally
 - …
 
Word Originlate Middle English: from medieval Latin permissibilis, from permiss- ‘allowed’, from the verb permittere, from per- ‘through’ + mittere ‘send, let go’.