The word is "grip".
Grip
Grasp, clutch
Grab, grasp, squeeze
grip or grab
You grip something tightly.
It means u hold something tightly or you don't hold it tightly
Grip
Some words that mean "seize" or "hold firmly" are:gripclutchgraspclaspclench
GRIP
rope
grip hold
The word is clutch. Note that this is a verb and a noun at the same time.