To assume or suggest to be true (without proof); to take for granted, to suppose.
To be presumptuous; with on, upon, to take advantage (of), to take liberties (with).
To take as a premise; to assume for the sake of argument.
With infinitive object: to be so presumptuous as (to do something) without proper authority or permission.
To take for granted; to conclude, with less than absolute supporting data; to believe.
To require to exist or to be true; to imply by the laws of thought or of nature.
To put by fraud in the place of another.
To theorize or hypothesize.
To imagine; to believe; to receive as true.