coincidental
adjective
[ kəʊɪnsɪˈdɛnt(ə)l ]
• resulting from a coincidence; happening by chance.
• "any resemblance between their reports is purely coincidental"
Similar:
accidental,
chance,
occurring by chance/accident,
fortuitous,
adventitious,
fluky,
casual,
serendipitous,
random,
aleatory,
unexpected,
unforeseen,
unanticipated,
unforeseeable,
unlooked-for,
unintentional,
unintended,
inadvertent,
involuntary,
unplanned,
unpremeditated,
unthinking,
unmeant,
• happening or existing at the same time.
• "it's convenient that his plan is coincidental with the group's closure"