1 [with clause] suppose that something is the case on the basis of probability:I presumed that the man had been escorted from the building [with object and complement]:two of the journalists went missing and are presumed dead
take for granted that something exists or is the case:the argument presumes that only one person can do the work
2 [no object, with infinitive] be arrogant or impertinent enough to do something:kindly don’t presume to issue me orders in my own house
[no object] make unjustified demands; take liberties:forgive me if I have presumed
[no object] (presume on/upon) unjustifiably regard (something) as entitling one to privileges:he was wary of presuming on the close friendship between them