to suppose or assume (something), esp with some degree of certainty
to take (something) for granted
to undertake (to do something) without leave or justification; to dare
I wouldn't presume to tell you how to do your job
to act or proceed on a presumption; to take something for granted
to take liberties
(+ on/upon) to take advantage, esp in an unscrupulous manner
Don't presume on his kindness
presumable adj
presumer noun
[Middle English presumen via early French presumer to assume, from Latin praesumere to anticipate, assure, from prae- + sumere to take]