Presume

verb

1. With infinitive object: to be so presumptuous as (to do something) without proper authority or permission.

   "I wouldn't presume to tell him how to do his job."

2. To perform, do (something) without authority; to lay claim to without permission.

   "Don't make the decision yourself and presume too much."

3. To assume or suggest to be true (without proof); to take for granted, to suppose.

   "Dr. Livingstone, I presume?"

4. To be presumptuous; with on, upon, to take advantage (of), to take liberties (with).