1.VerbTo be so presumptuous as (to do something) without proper authority or permission .mw-parser-output .object-usage-tag{font-style:italic}.mw-parser-output .deprecated{color:var(--wikt-palette-grey-lime-8,olivedrab)}[with to (+ infinitive)]. .mw-parser-output .defdate{font-size:smaller}
"I don't want to pretend to be an authority on this line of business, so I would never presume to tell you how to run your own company."
2.VerbTo perform, do (something) without authority; to lay claim to without permission.
"Don't make the decision yourself and presume too much."
3.VerbTo assume or suggest to be true (without proof); to take for granted, to suppose.
"Paw-prints in the snow allow us to presume a visit from next door's cat.; Dr. Livingstone, I presume?"
4.VerbTo take as a premise; to assume for the sake of argument.
5.VerbTo impose (on) for one's advantage; to be presumptuous; to take advantage (of); to take liberties (with) [with on or upon].
"Thanks, but I can't accept the money; I would not want to presume on the generosity of a stranger'"