From Longman Dictionary of Contemporary Englishwho shall remain namelesswho shall remain namelessspokenNAME OF A PERSON used when you want to say that someone has done something wrong but without mentioning their name, especially to criticize them in a friendly way A certain person, who shall remain nameless, forgot to lock the front door. → nameless
Examples from the Corpus
who shall remain nameless• My Lover For I will consider my lover, who shall remain nameless. 