Answer: postulate

AnswerCrossword Clue
POSTULATEPut forth, as an axiom
POSTULATEClaim
POSTULATEAssume a proposition.
POSTULATEUnderlying hypothesis.
POSTULATEMathematician's assumption
postulate(in ecclesiastical law) Nominate or elect (someone) to an ecclesiastical office subject to the sanction of a higher authority
postulateto assume or claim as true, existent, or necessary
postulateSuggest or assume the existence, fact, or truth of (something) as a basis for reasoning, discussion, or belief