Synonyms of adv by_chance

3 senses of by chance

Sense 1
perchance, by chance -- (through chance, "To sleep, perchance to dream..")

Sense 2
haply, by chance, by luck -- (by accident; "betrayed by a word haply overheard")

Sense 3
by chance, accidentally, circumstantially, unexpectedly -- (without advance planning; "they met accidentally")