|Adj.||1.||unfastened - not closed or secured; "the car door was unfastened"; "unfastened seatbelts"|
fastened - firmly closed or secured; "found the gate fastened"; "a fastened seatbelt"
|2.||unfastened - affording unobstructed entrance and exit; not shut or closed; "an open door"; "they left the door open"|
|3.||unfastened - not buttoned; "the wind picked up the hem of her unbuttoned coat"|
|4.||unfastened - not tied|