accidentally

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/ˌæk.sɪˈdɛnt(ə)li/

adverb

In an accidental manner; by chance, unexpectedly.

“He discovered penicillin largely accidentally.”

CommonScrabble 20

Meanings

adverbaccidentally (comparative more accidentally, superlative most accidentally)

comparative more accidentally · superlative most accidentally · alternative accidently

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

    He discovered penicillin largely accidentally.

    1 more example

    For quotations using this term, see Citations:accidentally.

    Synonyms: casually, fortuitously

  2. Unintentionally.

    He accidentally exposed the bacteria to mold spores.

    2 more examples

    As I arrived at the foot of the hill I overtook two ladies, whom I passed. As I did so, I brushed one of them accidently on the arm.

    1899, Knut Hamsun, “Part I”, in George Egerton [pseudonym; Mary Chavelita Dunne Bright], transl., Hunger […], London: Leonard Smithers and Co […], →OCLC, page 15

    Robins, of Torquay, had denied a single charge of causing unnecessary suffering to an animal. She claimed the microwave was accidentally turned on by one of the cats after the kitten got inside. But Knutton said the kitten was too small to even get onto the work surface.

    2011 December 14, Steven Morris, “Devon woman jailed for 168 days for killing kitten in microwave”, in Alan Rusbridger, editor, The Guardian, London: Guardian News & Media, →ISSN, →OCLC
    1. humorousinformalUsed 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'")

      4 more examples

      Oops, I accidentally the entire database. (meaning "I accidentally deleted the entire database")

      Naive and unfamiliar with the tech as I was, I accidentally the entirety of their self-titled 2003 album. Whoops.

      2005 March 11, Mark Gallagher, “[I] tell me I'm not the only one”, in alt.fan.pratchett (Usenet)

      > How many siteswaps can you juggle? And how do you learn them? > I can control about 15 siteswaps. […] I accidentally all the siteswaps. Is this bad?

      2009 February 27, <nick.laffey@gmail.com>, “How many siteswaps?”, in rec.juggling (Usenet)

      (Sorry, I accidentally a verb.)

      2012 August 30, Doug Lewan, “find-file-noselect”, in gnu.emacs.help (Usenet)

Synonyms & antonyms

adverbIn an accidental manner; by chance, unexpectedly.

More synonyms by meaning

adverbwithout advance planning

Opposite

adverbof a minor or subordinate nature

adverbwithout intention; in an unintentional manner

Opposite

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Englishaccidental
  2. Proto-Indo-European*leyg-
  3. Proto-Germanic*līką
  4. Englishaccidentally

From accidental + -ly.

Full word history & related roots →

Translations

Bulgarian случайно, случа́йно
  • случайно (slučajno)happening by chance, not necessarily a lucky one
  • случа́йно (slučájno)unexpectedly
Catalan accidentalment
  • accidentalmentunexpectedly
Chinese Mandarin 偶然
  • 偶然 (ǒurán)unexpectedly
Czech náhodou
  • náhodouunexpectedly
Danish tilfældigvis
  • tilfældigvisunexpectedly
Dutch toevallig
  • toevalligunexpectedly
Esperanto akcidente
  • akcidenteunexpectedly
Finnish vahingossa, sattumalta
  • vahingossahappening by chance, not necessarily a lucky one
  • sattumaltahappening by chance, not necessarily a lucky one
  • vahingossaunexpectedly
  • sattumaltaunexpectedly
French accidentellement
  • accidentellementunexpectedly
German zufällig, durch Zufall
  • zufällighappening by chance, not necessarily a lucky one
  • durch Zufallhappening by chance, not necessarily a lucky one
  • aus Versehenunexpectedly
  • versehentlichunexpectedly
  • unabsichtlichunexpectedly
  • unbeabsichtigtunexpectedly
Hebrew במקרה, לא בכוונה
  • במקרה (b'miqré)unexpectedly
  • לא בכוונה (lo' b'khavaná)unexpectedly
Icelandic óvart
  • óvartunexpectedly
Indonesian secara tak sengaja, tanpa disadari
  • secara tak sengajaunexpectedly
  • tanpa disadariunexpectedly
  • secara kebetulanunexpectedly
Irish de thimpiste, de thaisme
  • de thimpistehappening by chance, not necessarily a lucky one
  • de thaismehappening by chance, not necessarily a lucky one
  • de thimpisteunexpectedly
  • de thaismeunexpectedly
  • trí thionóiscunexpectedly
Italian casualmente, accidentalmente
  • casualmenteunexpectedly
  • accidentalmenteunexpectedly
Japanese 無意識的に, 偶然
  • 無意識的に (muishikiteki ni)unexpectedly
  • 偶然 (gūzen)unexpectedly
  • 誤って (ayamatte)unexpectedly
Korean 우연히도
  • 우연히도 (uyeonhido)unexpectedly
Latin temere, fortuītō
  • temereunexpectedly
  • fortuītōunexpectedly
  • casūunexpectedly
Latvian nejauši
  • nejaušiunexpectedly
Polish przypadkowo
  • przypadkowounexpectedly
Portuguese acidentalmente
  • acidentalmenteunexpectedly
Romanian accidental, întâmplător
  • accidentalunexpectedly
  • întâmplătorunexpectedly
Russian случа́йно, ненаме́ренно
  • случа́йно (slučájno)unexpectedly
  • ненаме́ренно (nenamérenno)unexpectedly
Slovak náhodne, náhodou
  • náhodneunexpectedly
  • náhodouunexpectedly
Spanish accidentalmente, sin querer
  • accidentalmenteunexpectedly
  • sin quererunexpectedly
Swedish oavsiktligen
  • oavsiktligenunexpectedly
Thai โดยไม่ตั้งใจ, เผลอ
  • โดยไม่ตั้งใจ (doi mâi dtâng jai)unexpectedly
  • เผลอ (plə̌ə)unexpectedly
Turkish kazara, kazaen
  • kazarahappening by chance, not necessarily a lucky one
  • kazaenhappening by chance, not necessarily a lucky one
  • ezkazahappening by chance, not necessarily a lucky one
  • yanlışlıklahappening by chance, not necessarily a lucky one
Ukrainian випадко́во
  • випадко́во (vypadkóvo)unexpectedly
Urdu غلطی, غلطی سے
  • غلطی (ġalatī)unexpectedly
  • غلطی سے (ġalatī sē)unexpectedly
Vietnamese ngẫu nhiên
  • ngẫu nhiênunexpectedly
Cite this entry
APA

accidentally. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/accidentally

MLA

“accidentally.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/accidentally. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “accidentally,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/accidentally.

Source: accidentally on Wiktionary, CC BY-SA 4.0.