Synonyms of accidental
19 similar words · 3 opposite words
Another word for accidental is casual. Other synonyms of accidental are unintentional, incidental, fortuitous, serendipitous and causeless. The opposite of accidental is impossible.
Synonyms and similar words for accidental
adjectiveHappening by chance, or unexpectedly; taking place not according to the usual course of things; by...
- adventitiousAccidental, additional, appearing casually.
adjectiveNot essential.
adjectiveMore synonyms
- incidentalExisting tangentially, being a byproduct, a tangent, or a likely consequence.
- casualHappening by chance.
- contingent
- fortuitousHappening by fortune or chance; accidental, coincidental.
- occasional
- serendipitousBy serendipity; by unexpected good fortune.
- by accidentAccidental; as the result of some unforeseen happening or series of events; unexpected; resulting from an event without...
- by the byIncidental; unplanned.
- causelessHaving no obvious cause; fortuitous or inexplicable.
- lippening UK, dialectalOccasional; accidental.
- random
- unforeseen
- unintendedNot intended; unplanned.
- unintentionalInadvertent; unwitting.
- unplanned
- accidentary obsoleteAccidental; occurring by chance; occasional.
- chanceable obsoleteHappening by chance; accidental.
Opposite of accidental
adjectiveMore antonyms
Meaning of accidental
- adjective Pertaining to accident and not essence; thus, inessential; incidental; secondary.
- adjective Nonessential to something's inherent nature (especially in Aristotelian thought).
- adjective Adjusted by one or two semitones, in temporary departure from the key signature.
accidental in other languages
Questions about synonyms of accidental
- What is another word for accidental?
- Accidental has 19 synonyms on Word.ws, such as casual, unintentional, incidental, fortuitous, serendipitous, causeless and unintended.
- What is the opposite of accidental?
- The opposite of accidental is impossible.
- What does accidental mean?
- Accidental means pertaining to accident and not essence; thus, inessential; incidental; secondary.
Source and license
Adapted from Wiktionary: accidental (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.
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Cite this page: “Synonyms of accidental.” Word.ws, https://word.ws/synonyms/accidental. Based on Wiktionary, CC BY-SA 4.0.