eighteenth

eigh·teenth
E1I1G2H4T1E1E1N1T1H4
/ˌeɪˈtiːnθ/

adjective

The ordinal form of the number eighteen.

Similar
XVIII18thXVIIIthordinal
OriginMiddle English eightetenthe ← Old English eahtatēoþa ← Proto-Germanic *ahtudô tehundô →
Less commonScrabble 17
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Meanings

adjective
  1. The ordinal form of the number eighteen.

    Synonyms: XVIII

nouneighteenth (plural eighteenths)

plural eighteenths

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

Synonyms & antonyms

adjectiveThe ordinal form of the number eighteen.

Similar
XVIII
Similar
18thXVIIIth
Similar
18thXVIIIth

More synonyms by meaning

adjectivecoming next after the seventeenth in position

Similar
18thordinal

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Germanic*ahtudô tehundô
  2. Old Englisheahtatēoþa
  3. Middle Englisheightetenthe
  4. Englisheighteenth

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

More words from Middle English, Old English, Proto-Germanic

Full word history & related roots →

Translations

Afrikaans agtiende
  • agtiendethe ordinal form of the number eighteen — see also 18th
Ancient Greek ὀκτωκαιδέκατος
  • ὀκτωκαιδέκατος (oktōkaidékatos)the ordinal form of the number eighteen — see also 18th
Basque hemezortzigarren, hamazortzigarren
  • hemezortzigarrenthe ordinal form of the number eighteen — see also 18th
  • hamazortzigarrenthe ordinal form of the number eighteen — see also 18th
Bengali অষ্টাদশ
  • অষ্টাদশ (ośṭadoś)the ordinal form of the number eighteen — see also 18th
Bulgarian осемнадесети
  • осемнадесети (osemnadeseti)the ordinal form of the number eighteen — see also 18th
Catalan divuitè, dihuité
  • divuitèthe ordinal form of the number eighteen — see also 18th
  • dihuitéthe ordinal form of the number eighteen — see also 18th
  • divuitèone of eighteen equal parts of a whole
  • dihuitéone of eighteen equal parts of a whole
Czech osmnáctý
  • osmnáctýthe ordinal form of the number eighteen — see also 18th
Danish attende, attener
  • attendethe ordinal form of the number eighteen — see also 18th
  • attenerthe person or thing in the eighteenth position
  • attendedelone of eighteen equal parts of a whole
Dutch achttiende, achttiende
  • achttiendethe ordinal form of the number eighteen — see also 18th
  • achttiendethe person or thing in the eighteenth position
  • achttiendeone of eighteen equal parts of a whole
Esperanto dek-oka, dekoka
  • dek-okathe ordinal form of the number eighteen — see also 18th
  • dekokathe ordinal form of the number eighteen — see also 18th
Estonian kaheksateistkümnes
  • kaheksateistkümnesthe ordinal form of the number eighteen — see also 18th
Finnish kahdeksastoista, kahdeksastoista
  • kahdeksastoistathe ordinal form of the number eighteen — see also 18th
  • kahdeksastoistathe person or thing in the eighteenth position
  • kahdeksastoistaosaone of eighteen equal parts of a whole
French dix-huitième, dix-huit
  • dix-huitièmethe ordinal form of the number eighteen — see also 18th
  • dix-huitthe ordinal form of the number eighteen — see also 18th
  • dix-huitièmethe person or thing in the eighteenth position
  • dix-huitièmeone of eighteen equal parts of a whole
German achtzehnte
  • achtzehntethe ordinal form of the number eighteen — see also 18th
Hindi अठारहवाँ, अठारहवाँ
  • अठारहवाँ (aṭhārahvā̃)the ordinal form of the number eighteen — see also 18th
  • अठारहवाँ (aṭhārahvā̃)the person or thing in the eighteenth position
  • अठारहवाँ (aṭhārahvā̃)one of eighteen equal parts of a whole
Hungarian tizennyolcadik, tizennyolcadik
  • tizennyolcadikthe ordinal form of the number eighteen — see also 18th
  • tizennyolcadikthe person or thing in the eighteenth position
  • tizennyolcadone of eighteen equal parts of a whole
Italian diciottesimo, diciottesimo
  • diciottesimothe ordinal form of the number eighteen — see also 18th
  • diciottesimothe ordinal form of the number eighteen — see also 18th
  • diciottesimathe ordinal form of the number eighteen — see also 18th
  • diciottesimothe person or thing in the eighteenth position
  • diciottesimathe person or thing in the eighteenth position
  • diciottesimoone of eighteen equal parts of a whole
Japanese 十八番目
  • 十八番目 (Jū hachi-banme)the ordinal form of the number eighteen — see also 18th
Korean 열여덟째
  • 열여덟째 (yeoryeodeoljjae)the ordinal form of the number eighteen — see also 18th
Latin duodevicesimus, octavus decimus
  • duodevicesimusthe ordinal form of the number eighteen — see also 18th
  • octavus decimusthe ordinal form of the number eighteen — see also 18th
  • octavus decimusthe person or thing in the eighteenth position
  • octavum decimumone of eighteen equal parts of a whole
Latvian astoņpadsmitais
  • astoņpadsmitaisthe ordinal form of the number eighteen — see also 18th
Lithuanian aštuonioliktas
  • aštuonioliktasthe ordinal form of the number eighteen — see also 18th
Norwegian attende
  • attendethe ordinal form of the number eighteen — see also 18th
Persian هجدهم
  • هجدهم (hejdahom)the ordinal form of the number eighteen — see also 18th
Polish osiemnasty
  • osiemnastythe ordinal form of the number eighteen — see also 18th
Portuguese décimo oitavo, décimo oitavo
  • décimo oitavothe ordinal form of the number eighteen — see also 18th
  • décimo oitavothe person or thing in the eighteenth position
  • décimo oitavoone of eighteen equal parts of a whole
Romanian optsprezecelea, optșpelea
  • optsprezeceleathe ordinal form of the number eighteen — see also 18th
  • optșpeleathe ordinal form of the number eighteen — see also 18th
Russian восемна́дцатый, восемнадцатая
  • восемна́дцатый (vosemnádcatyj)the ordinal form of the number eighteen — see also 18th
  • восемнадцатаяone of eighteen equal parts of a whole
Slovak osemnásty
  • osemnástythe ordinal form of the number eighteen — see also 18th
Spanish decimoctavo, decimoctavo
  • decimoctavothe ordinal form of the number eighteen — see also 18th
  • decimoctavothe person or thing in the eighteenth position
  • dieciochoavoone of eighteen equal parts of a whole
Swedish XVIII), adertonde
  • XVIII)the ordinal form of the number eighteen — see also 18th
  • adertondethe ordinal form of the number eighteen — see also 18th
  • artondethe person or thing in the eighteenth position
  • artondelone of eighteen equal parts of a whole
  • artondedelone of eighteen equal parts of a whole
Tagalog ikalabing-walo
  • ikalabing-walothe ordinal form of the number eighteen — see also 18th
Tamil பதினெட்டாம், பதினெட்டாவது
  • பதினெட்டாம் (patiṉeṭṭām)the ordinal form of the number eighteen — see also 18th
  • பதினெட்டாவது (patiṉeṭṭāvatu)the ordinal form of the number eighteen — see also 18th
Thai ที่สิบแปด
  • ที่สิบแปด (tîi-sìp-bpɛ̀ɛt)the ordinal form of the number eighteen — see also 18th
Turkish on sekizinci, on sekizinci
  • on sekizincithe ordinal form of the number eighteen — see also 18th
  • on sekizincithe person or thing in the eighteenth position
Ukrainian вісімна́дцятий
  • вісімна́дцятий (visimnádcjatyj)the ordinal form of the number eighteen — see also 18th
Yiddish אַכצנט, אַכצנטל
  • אַכצנט (akhtsnt)the ordinal form of the number eighteen — see also 18th
  • אַכצנטל (akhtsntl)one of eighteen equal parts of a whole

Rhymes & wordplay

Rhymes with eighteenth

nineteenthfourteenthseventeenthsixteenthfifteenththirteenthjuneteenthgreenth
All rhymes →
Cite this entry
APA

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

MLA

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

Chicago

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

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