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adj. Based on or involving conjecture. See Synonyms at supposed.

adj. Tending to conjecture.

adj. In the nature of a conjecture, or based on a conjecture.

n. Something that is conjectural; a conjecture.

adj. Dependent on conjecture; fancied; imagined; guessed at; undetermined; doubtful.

Depending on conjecture; springing from or implying a guess or conjecture; problematical: as, a conjectural opinion; a conjectural emendation of a text.

Given to conjecturing or to depending on mere conjecture: as, a conjectural critic.

adj. based primarily on surmise rather than adequate evidence

"The only physical cause for the practice which suggests itself to me and that must be owned to be purely conjectural, is that within the Sotadic Zone there is a blending of the masculine and feminine temperaments, a crasis which elsewhere occurs only sporadically."

theoretical    theoretic   

unquestionable   

supposed   

fancied    imagined    undetermined    doubtful    suppositional   

farfetched    erroneous    coincidental    chimerical    illusory