presume

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

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

Paw-prints in the snow allow us to presume a visit from next door's cat.

If we presume that human cloning may one day become a mundane, everyday reality, then maybe it's time to start thinking more positively about our soon-to-arrive genetically engineered pseudo-siblings.

Presume not on thy heart when mine is slain;

Thou gavest me thine, not to give back again.