Synonyms of alleged

2 Syllables
dubious, suspect, stated
3 Syllables
supposed, pretended, itular, self-named, soi-disant, nominal, purported, so-called, averred, accounted, witnessed, declared, suspicious, reputed, described, self-styled, professed
4 Syllables
suppositious, ostensible, questionable, putative, hypothetic
5 Syllables
suppositive, suppository, suppositional, supposititious