unblock
— Verb
– English
~ play the cards of (a suit) so that the last trick on which a hand can follow suit will be taken by a higher card in the hand of a partner who has the remaining cards of a combined holding
unbolt
— Verb
– English
~ undo the bolt of; "unbolt the door"
unbosom
— Verb
– English
~ relieve oneself of troubling information
unbox
— Verb
– English
~ remove from a box; "unbox the presents"
unbrace
— Verb
– English
~ remove a brace or braces from
unbrace
— Verb
– English
~ undo the ties of; "They untied the prisoner"