impermissible

Word family  noun permission permit permissiveness adjective permissible ≠ impermissible permissive verb permit

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++im·per·mis·si·ble /ˌɪmpɜːˈmɪsəbəl $ -ɜːr-/ adjective formal  LET/ALLOWsomething that is impermissible cannot be allowed 不许可的，不允许的 OPP permissible

Examples from the Corpus

impermissible• The conduct of the officers in this case was impermissible.• I consider that such doctrine would be dangerous and impermissible.• To switch off the respirator otherwise is impermissible.• Codes of conduct were beginning to emerge and a range of permissible and impermissible subjects was being informally drawn up.

im·per·mis·si·ble adjectiveChineseSyllable  

be allowed something is cannot that impermissible Corpus

impermissible
im‧per‧mis‧si‧ble /ˌɪmpɜːˈmɪsəbəl, ˌɪmpɜːˈmɪsɪbəl $ -ɜːr-/ adjective formalsomething that is impermissible cannot be allowed
   OPP  permissible

im·per·mis·sibleBrE /ˌɪmpɜːˈmɪsəbl/ 🔊NAmE /ˌɪmpɜːrˈmɪsəbl/ 🔊 adjectivethat cannot be allowed 不允许的；不许可的◆an impermissible invasion of privacy对个人隐私的非法侵犯 OPP permissible