Lock in and Shut up

Lock in verb - Place in a place where something cannot be removed or someone cannot escape.

Shut up is a synonym for lock in in enclose topic. In some cases you can use "Shut up" instead a verb "Lock in", when it comes to topics like lock up.

Shut up verb - Place in a place where something cannot be removed or someone cannot escape.

Lock in is a synonym for shut up in lock up topic. You can use "Lock in" instead a verb "Shut up".