Assume
Part of speech: verb
Definition: To authenticate by means of belief; to surmise; to suppose to be true, especially without proof. To take on a position or duty. To adopt an idea or cause.
Surmise
Part of speech: noun
Definition: Thought, imagination, or conjecture, which may be based upon feeble or scanty evidence; suspicion; guess; as, surmises of jealousy or of envy.Reflection; thought; posit.
Part of speech: verb
Definition: To conjecture, to opine or to posit with contestable premises.