siete

Siete is the Spanish word for the number seven. It functions as a cardinal numeral used in counting and to express quantities. In sentences it can modify nouns in phrases such as siete libros (seven books) or siete kilómetros (seven kilometers). It also appears in common expressions like siete días (seven days) or siete veces (seven times). As a numeric term, siete is invariant with gender and does not change form to agree with the noun it accompanies.

Etymology and cognates: Siete derives from Latin septem, through the development of the Romance languages. It has cognates in several other Romance languages, including Italian sette, French sept, and Portuguese sete. These forms share the same basic meaning and are used in similar counting contexts in their respective languages.

Usage notes: In Spanish, siete is used for counting and for referring to a quantity up to seven and beyond; for ordinals, the related form is séptimo (seventh). The word is commonly found in everyday speech, in literature, and in numerals used for dates, ages, or measurements. As with other cardinal numerals, its form remains the same regardless of the gender of the noun it modifies.