eighteenth

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eighteenth

  • /ˌeɪˈtiːnθ/

Rhymes with -iːnθ

Where it comes from

Inherited from Middle English eightetenthe, eightetethe, from Old English eahtatēoþa, from Proto-Germanic *ahtudô tehundô. Equivalent to eighteen + -th (ordinal suffix).

adjective

  1. The ordinal form of the number eighteen.

    Similar: XVIII

Similar: 18th, XVIIIth

noun eighteenths

  1. The person or thing in the eighteenth position.
  2. One of eighteen equal parts of a whole.
  3. informal A party to celebrate an eighteenth birthday.

Similar: 18th, XVIIIth

Thesaurus

Closest in meaning: ordinal, seventeenth, nineteenth, eightieth, twenty-fourth, twentieth, thirteenth, ninth, eighth, thirty-eighth, shap, xviii, octodecimo, eighteenthly, fifteenth, sixteenth

adjective

Similar: 18th, XVIIIth

noun

Similar: 18th, XVIIIth

Translations

Every language

adj the ordinal form of the number eighteen — see also 18th

Españoldecimoctavo
한국어열여덟째 yeoryeodeoljjae
日本語十八番目 Jū hachi-banme
हिन्दीअठारहवाँ aṭhārahvā̃
Portuguêsdécimo oitavo
Françaisdix-huitième, dix-huit
Deutschachtzehnte
Italianodiciottesimo, diciottesima
Românăoptsprezecelea, optșpelea
Русскийвосемна́дцатый vosemnádcatyj

noun the person or thing in the eighteenth position

Españoldecimoctavo
हिन्दीअठारहवाँ aṭhārahvā̃
Portuguêsdécimo oitavo
Françaisdix-huitième
Italianodiciottesimo, diciottesima

noun one of eighteen equal parts of a whole

Españoldieciochoavo
हिन्दीअठारहवाँ aṭhārahvā̃
Portuguêsdécimo oitavo
Françaisdix-huitième
Italianodiciottesimo
Русскийвосемнадцатая

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Cite this
MLA

"eighteenth." Wiktionary, via Micwyn, micwyn.com/word/eighteenth. Accessed 6 Nov. 2026.

APA

eighteenth. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/eighteenth

Chicago

"eighteenth." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/eighteenth.

BibTeX
@misc{eighteenth_2026,
  title = {eighteenth},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/eighteenth},
  urldate = {2026-11-06}
}