15 perhaps synonyms include maybe, for all I know, for all you know, it could be (that), it may be (that), it is possible (that), possibly, and happen. Perhaps is an adverb, and its antonyms are definitely and certainly. Here are some additional synonyms for "perhaps" with example sentences.
15 other ways to say perhaps.
He was, perhaps, too ambitious.
perhaps we should try again later.
She might, perhaps, join us today.