Spanish ordinal numbers, their role in grammar, and a comprehensive guide to masculine and feminine forms.

In Spanish, ordinal numbers indicate position or order in a sequence (e.g., first, second, third). They agree in gender (masculine or feminine) with the noun they modify and sometimes in number (singular/plural). Most are adjectives, so they follow noun agreement rules.

Masculine Ordinals

Spanish ordinals have different forms for masculine and feminine. The masculine form typically ends in -o and is used with masculine nouns.
Spanish MasculineEnglishSpanish ExampleEnglish Example
primerofirstEl primero es mi amigo.The first is my friend.
segundosecondEl segundo está ocupado.The second is busy.
tercerothirdEl tercero llegó tarde.The third arrived late.
cuartofourthEl cuarto es grande.The fourth is big.
quintofifthEl quinto salió temprano.The fifth left early.
sextosixthEl sexto es difícil.The sixth is difficult.
séptimoseventhEl séptimo ganó.The seventh won.
octavoeighthEl octavo es nuevo.The eighth is new.
novenoninthEl noveno estudia mucho.The ninth studies a lot.
décimotenthEl décimo terminó.The tenth finished.
Note: “Primero” and “tercero” drop the final “-o” before a singular masculine noun (e.g., primer libro, tercer día).

Feminine Ordinals

The feminine form ends in -a and is used with feminine nouns. It follows the same ordinal root as the masculine form.
Spanish FeminineEnglishSpanish ExampleEnglish Example
primerafirstLa primera es mi hermana.The first is my sister.
segundasecondLa segunda está lista.The second is ready.
tercerathirdLa tercera llegó tarde.The third arrived late.
cuartafourthLa cuarta es pequeña.The fourth is small.
quintafifthLa quinta salió temprano.The fifth left early.
sextasixthLa sexta es difícil.The sixth is difficult.
séptimaseventhLa séptima ganó.The seventh won.
octavaeighthLa octava es nueva.The eighth is new.
novenaninthLa novena estudia mucho.The ninth studies a lot.
décimatenthLa décima terminó.The tenth finished.

Higher Ordinals

Ordinals beyond tenth are usually formed by adding the suffix -avo/-ava (e.g., undécimo, duodécimo) or by using cardinal numbers followed by “-ésimo/-ésima” (e.g., vigésimo for 20th). These forms are more common in formal or written contexts.
Spanish OrdinalEnglishSpanish ExampleEnglish Example
undécimo / undécimaeleventhEl undécimo capítulo es interesante.The eleventh chapter is interesting.
duodécimo / duodécimatwelfthLa duodécima página está en blanco.The twelfth page is blank.
decimotercero / decimotercerathirteenthEl decimotercer piso tiene vista.The thirteenth floor has a view.
vigésimo / vigésimatwentiethLa vigésima edición es especial.The twentieth edition is special.
trigésimo / trigésimathirtiethEl trigésimo aniversario fue celebrado.The thirtieth anniversary was celebrated.
Note: For 11th and 12th, “undécimo/undécima” and “duodécimo/duodécima” are more common in writing, while “onceavo/onceava” and “doceavo/doceava” are used in some regions.

Usage and Placement

Spanish ordinals usually precede the noun they modify. They agree in gender and number with that noun.
  • Masculine singular: primer libro, tercer capítulo
  • Feminine singular: primera página, tercera línea
  • Masculine plural: primeros libros, terceros capítulos
  • Feminine plural: primeras páginas, terceras líneas
Example:
  • El tercer día viajamos a Madrid. (On the third day, we traveled to Madrid.)
  • La primera vez fue emocionante. (The first time was exciting.)
  • Los quintos estarán en la sala. (The fifths will be in the living room.)
  • Las séptimas están ausentes. (The seventh (group) is absent.)

Choose the correct ordinal form: '___ día viajamos a Madrid.' (third day, masculine singular)


tercer
'Día' is masculine singular, so 'tercer' (not 'tercero') is correct because 'tercero' drops the '-o' before singular masculine nouns.

Summary

  • Spanish ordinals show position or order (first, second, third…).
  • They agree in gender (masculine -o, feminine -a) and sometimes number.
  • Primero and tercero drop the “-o” before singular masculine nouns.
  • Ordinals usually precede the noun.
  • Higher ordinals (11th, 12th, 13th, etc.) often use -ésimo or special forms (undécimo, duodécimo).
  • Usage is common in dates, rankings, instructions, and formal writing.

What is the correct ending for Spanish ordinals modifying a feminine noun?


-a
Feminine ordinals end in '-a' to agree with the feminine noun.

Flashcards (1 of 25)

    • English: first
    • English Example: The first is my friend.

    Last updated: Thu Jun 12, 2025

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