Source : WordNet®

unfastened
     adj 1: not closed or secured; "the car door was unfastened";
            "unfastened seatbelts" [ant: {fastened}]
     2: affording unobstructed entrance and exit; not shut or
        closed; "an open door"; "they left the door open" [syn: {open}]
        [ant: {shut}]
     3: not buttoned; "the wind picked up the hem of her unbuttoned
        coat" [syn: {unbuttoned}] [ant: {buttoned}]
     4: not tied [syn: {untied}] [ant: {tied}]