adverb
perhaps; possibly; by any chance
Expresses a conjecture or suspicion, often with a sense of slight doubt or surprise. Commonly used in rhetorical questions or when the speaker is wondering about something unexpected.
もしや、彼はもう来ているのではないか。
Perhaps he has already arrived, hasn't he?
もしや、何かあったのですか。
By any chance, did something happen?