adjective
1.
accepted or advanced as true or real on the basis of less than conclusive evidence
the supposed efficiency of the new machine
Synonyms: conjectural, hypothetical, putative, reputed, suppositional, suppositious, supposititious, suppositive, suppository; compare alleged
Related Word: assumed, postulated, postulatory, presumed, presupposed; provisional, tentative; academic, speculative, theoretical; alleged
Contrasted words: sure; known, proved, proven; ascertained, demonstrated, observed, recognized
Antonyms: certain
2.
Synonyms: alleged , ostensible, pretended, professed, purported, so-called
Antonyms: proved, proven