unfastened

definition: not tied
example:
speech part: adjective
synonyms: untied
definition: not buttoned
example:
speech part: adjective
synonyms: unbuttoned
definition: affording unobstructed entrance and exit
example:
speech part: adjective
synonyms: open
definition: not closed or secured
example: the car door was unfastened
speech part: adjective
synonyms:

How unfastened is being used?