D defs.my
Entry 1 sense Webster, 1913

Accidentally

/ăk-sĭ-dĕntʹ(ə)lē/ · Ac·ci·den·tal·ly · IPA /ˌæk.sɪˈdɛnt(ə)li/
01 adv. In an accidental manner; unexpectedly; by chance; unintentionally; casually; fortuitously; not essentially.
  1. 1.
    In an accidental manner; unexpectedly; by chance; unintentionally; casually; fortuitously; not essentially.