to cause (one machine part) to become detached

free from connection

to force (a person) to leave (a place)

throw or be thrown out

(to cause something) to become loose or looser

unbind

to remove an obstruction from (a drain etc)

clear

(of hair) loose, not tied; (of a book) without a cover

undo

to undo the buckle(s) of (something)

unfasten

of undo

open

to untie, unfasten, loosen (knots, buttons etc); to destroy (something good) and bring back the (bad) state of affairs that existed before

open

to remove a screw or screws from (something)

set free; unbind