One possibility is grab.
grip hold
You grip something tightly.
grip
Grip
GRIP
grip hold
Grip
grab
You grip something tightly.
grip
It means u hold something tightly or you don't hold it tightly
Grip
grip
rope
GRIP
The word is clutch. Note that this is a verb and a noun at the same time.
Some words that mean to hold on tightly are: clasp clutch grasp grip seize