Added 9 October 2026
accidentally
/ˌæk.sɪˈdɛnt(ə)li/ adverb
In Latin: temere, fortuītō, casū Wiktionary
adverb Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about accidentally at Wordnik → Where our words come from →
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In an accidental manner; by chance, unexpectedly.
He discovered penicillin largely accidentally.
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Unintentionally.
He accidentally exposed the bacteria to mold spores.
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Used with the verb omitted but implied, the verb itself having the meaning 'omit', 'delete' or similar.
I accidentally the word 'not'. (meaning "I accidentally omitted the word 'not'")