UNBELIEF Meaning of UNBELIEF in English un ‧ be ‧ lief /ˌʌnbəˈliːf, ˌʌnbɪˈliːf/ BrE AmE noun [uncountable] literary a lack of religious belief, or a refusal to believe in a religious faith ⇨ disbelief Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012