supposed vs conjectural

supposed and conjectural both are adjectives.

Word	Noun	Adjective	Verb	Adverb
supposed	No	Yes	No	No
conjectural	No	Yes	No	No

As adjectives, supposed and conjectural are synonyms defined as:

supposed and conjectural: based primarily on surmise rather than adequate evidence

Other synonyms of supposed include divinatory, hypothetic, hypothetical, suppositional, suppositious, supposititious.

supposed (adjective)	conjectural (adjective)
required or under orders	based primarily on surmise rather than adequate evidence
doubtful or suspect
based primarily on surmise rather than adequate evidence
mistakenly believed