undécimo

See also: undecimo

Portuguese

Portuguese numbers ^(edit)

←  10	11	12  → [a], [b], [c]
Cardinal: onze     Ordinal: décimo primeiro, undécimo, onzeno     Ordinal abbreviation: 11.º, 11º     Multiplier: undécuplo     Fractional: undécimo, onzeno, um onze avos
Portuguese Wikipedia article on 11

Etymology

Borrowed from Latin ūndecimus.

Pronunciation

 

• (Brazil) IPA^(key): /ũˈdɛ.si.mu/

• (Brazil) IPA^(key): /ũˈdɛ.si.mu/
  • (Southern Brazil) IPA^(key): /ũˈdɛ.si.mo/

• (Portugal) IPA^(key): /ũˈdɛ.si.mu/

• Hyphenation: un‧dé‧ci‧mo

Adjective

undécimo (feminine undécima, masculine plural undécimos, feminine plural undécimas)

1. (formal, ordinal number) eleventh

   Synonyms: (more common) décimo primeiro, onzeno

Noun

undécimo m (plural undécimos)

1. (fractional number) eleventh (one of eleven parts of a whole)

   Synonym: onze avos

Related terms

• onze

Further reading

• “undécimo”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2026
• “undécimo”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2026

Spanish

Spanish numbers ^(edit)

←  10	11	12  → [a], [b], [c], [d]
Cardinal: once     Ordinal: undécimo, decimoprimero, décimo primero     Apocopated ordinal: decimoprimer, décimo primer     Ordinal abbreviation: 11.º     Multiplier: undécuplo     Fractional: onceavo, undécimo
Spanish Wikipedia article on 11

Pronunciation

• IPA^(key): /unˈdeθimo/ [ũn̪ˈd̪e.θi.mo] (Equatorial Guinea, Spain)
• IPA^(key): /unˈdesimo/ [ũn̪ˈd̪e.si.mo] (Latin America, Philippines)
• Rhymes: -eθimo (Equatorial Guinea, Spain)
• Rhymes: -esimo (Latin America, Philippines)
• Syllabification: un‧dé‧ci‧mo

Adjective

undécimo (feminine undécima, masculine plural undécimos, feminine plural undécimas)

1. (ordinal number) eleventh

   Synonym: decimoprimero

Noun

undécimo m (plural undécimos)

1. (fractional number) eleventh

   Synonym: onceavo

Further reading

• “undécimo”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025