A Quick and Simple Dictionary

presume

1. Verb.  (transitive, now) To perform, do (something) without authority; to lay claim to without permission. (defdate, from 14th c.) .
2. Verb.  (transitive) With infinitive object: to be so presumptuous as (to do something) without proper authority or permission. (defdate, from 14th c.) .
3. Verb.  (transitive) To assume to be true (without proof); to take for granted, to suppose. (defdate, from 14th c.) .
4. Verb.  (intransitive) To be presumptuous; with (term, on) , (term, upon) , to take advantage (of), to take liberties (with). (defdate, from 15th c.) .