Синоним occurring by accident

coincidental accidental casual chance fluky fortuitous unintentional unplanned unintended adventitious aleatory random serendipitous unexpected inadvertent involuntary unanticipated unforeseeable unforeseen unlooked-for unmeant unpremeditated unthinking circumstantial incidental occurring by chance spontaneous uncalculated unpredicted unwitting flukey extemporaneous impromptu happening unexpectedly by chance lucky fortunate unknowing subconscious unconscious odd offhand at random unlooked for haphazard undesigned unthought undevised contingent unpredictable arbitrary erratic aimless purposeless uncertain out of the blue incalculable chancy surprise undreamed-of capricious fluke innocent unhoped-for by-the-way apropos unknowable without warning variable not bargained for hit-or-miss ad hoc unpurposeful not planned sporadic stray possible spot related accompanying from left field changeable lucky-dog attendant concomitant contributory concurrent irregular occasional by accident luck out luck in well timed reckless depending liable provisional likely probable probably subject reliant hitty-missy careless thoughtless heedless negligent naive abrupt unsought sudden surprising unmindful providential heaven-sent trial and error uncaring unheeding expedient opportune felicitous propitious convenient auspicious timely irreflective simple happy apt unconcerned jammy feckless not on purpose uninvited astonishing unprompted undreamed of unsolicited unthought-of startling honest natural naïve well-intentioned without notice at the mercy of events unsure iffy dubious dicey doubtful undivinable touchy hit and miss in the balance up in the air touch-and-go hit-and-miss

occurring by chance occurring by turns occurring each day occurring every day occurring in occurring in rotation occurring before occurring at the same time occurring again occurring abruptly occurring occurrents