relinquish
verb.
part with a possession or right
I am relinquishing my bedroom to the long-term house guest|resign a claim to the throne
verb.
do without or cease to hold or adhere to
We are dispensing with formalities|relinquish the old ideas
verb.
turn away from; give up
I am foreswearing women forever
verb.
release, as from one's grip
Let go of the door handle, please!|relinquish your grip on the rope--you won't fall