by chance Synonyms

accidentally unexpectedly by luck by a happy chance by happenstance out of the clear blue sky by coincidence by good luck unwittingly undesignedly serendipitously erratically by some chance by a mere chance by a twist of fate do something by mistake completely by accident come uncalled coincidentallies as it may happen as if by accident as if accidentally by a stroke of luck by a piece of luck as things may turn out unconsciously coincidentally unintentionally randomly perchance luckily haply fortunately confusedly circumstantially casually incidentally inadvertently as luck would have it by any chance by accident at every turn as it happens adventitiously capriciously unknowingly at random fortuitously anyhow