To Presume

1. (transitive) With infinitive object: to be so presumptuous as (to do something) without proper authority or permission. [from 14th c.]
2. (transitive, now rare) To perform, do (something) without authority; to lay claim to without permission. [from 14th c.]
3. (transitive) To assume or suggest to be true (without proof); to take for granted, to suppose. [from 14th c.]
4. (transitive) To take as a premise; to assume for the sake of argument.
5. (intransitive) To be presumptuous; with on, upon, to take advantage (of), to take liberties (with). [from 15th c.]

Synonyms

• (to assume to be true): suppose