Accidentally

//ˌæk.sɪˈdɛnt(ə)li// adv

Definitions

Adverb
  1. 1
    In an accidental manner; by chance, unexpectedly.

    "He discovered penicillin largely accidentally."

  2. 2
    Unintentionally.

    "He accidentally exposed the bacteria to mold spores."

Adverb
  1. 1
    without advance planning wordnet
  2. 2
    without intention; in an unintentional manner wordnet
  3. 3
    of a minor or subordinate nature wordnet

Etymology

From accidental + -ly.

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