lapsed

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++lapsed /læpst/ adjective [only before noun]  PASTno longer having the beliefs you used to have, especially religious beliefs 背弃的，背离的〔尤指宗教信仰〕 OPP practising a lapsed Catholic 一个背弃信仰的天主教徒

Examples from the Corpus

lapsed Catholic• Instead, I did some-thing that even as a lapsed Catholic I still did for good luck on nights before exams.• She calls herself a lapsed Catholic who once wanted to be a nun.

lapsed adjectiveChinese  

no to Corpus having beliefs used the you longer

lapsed
lapsed /læpst/ adjective [only before noun]
no longer having the beliefs you used to have, especially religious beliefs
   OPP  practising:
    a lapsed Catholic