unthink

verb (used without object), un·thought, un·think·ing.

1. to end one’s thought or reverse the process of thought.

verb (used with object), un·thought, un·think·ing.

2. to dispel from the mind: Unthink your thoughts.

verb -thinks, -thinking or -thought (tr)

1. to reverse one’s opinion about
2. to dispel from the mind