presupposition

noun

1. (countable, uncountable)An assumption made beforehand; a preliminary conjecture or speculation.

   “He made one cardinal error in his presuppositions about the relation between language and perception, but in this he was far from alone.”

2. (countable, uncountable)The act of presupposing.
3. (countable, uncountable)An assumption or belief implicit in an utterance or other use of language.

   “For instance: a verb might convey someone's evaluation of it as a presupposition. To say ‘they deprived him of a visit to his parents’ presupposes that he wanted to visit (vs. ‘spare him a visit...’).”