un·hook 
/ˌʌnˈhʊk/ verb
un·hooks; un·hooked; un·hook·ing /ˌʌnˈhʊk/ verb [+ obj] 1 : to remove (something) from a hook
▪ He unhooked the fish from the line. 2 : to open or remove (something that is attached with hooks)
▪ She reached behind her and unhooked her bra.
▪ He unhooked the fish from the line.
▪ She reached behind her and unhooked her bra.
