Unfasten (4)

'unfasten' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for open that I've seen before include "Public" , "Unfasten" , "Frank; unfold" , "Plain" , "begin to > crack" .)
'unfasten' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for undo that I've seen before include "Ruin or loosen ties" , "Cancel - destroy" , "Spoil" , "Unfasten or annul" , "Reverse effect of" .)
'unfasten' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for free that I've seen before include "Unrestrained" , "Untrammelled" , "Lavish" , "Liberated" , "sovereign" .)
'unfasten' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for unlock that I've seen before include "Open with key" , "Release with a key" , "Crop" , "Release bolt" .)
'unfasten' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for untie that I've seen before include "Release from bonds or open shoelace" , "Loosen ropes or knots" , "Loose bonds" , "Loosen, as laces" , "Release bindings or shoelaces" .)
(Other definitions for unpin that I've seen before include "Things tied together" , "free" , "release" , "Loosen" , "Remove fastening from" .)