invalidaste

Invalidaste is the second-person singular preterite form of the Spanish verb invalidar, used to indicate that you rendered something invalid in the past. It is a regular -ar verb, following the tú conjugation pattern in the pretérito indefinido: invalidaste, with the stem invalid-.

Etymology and form: The verb invalidar derives from invalidus in Latin, formed to mean to make something not valid. The related adjective inválido (not valid) and the noun válido (valid) share the same semantic field, and the prefix in- in Latin contributed to the modern sense of negating validity in Spanish.

Usage and nuance: Invalidaste appears in both formal and informal contexts when describing the act of declaring a document, argument, signature, or claim as no longer valid. It commonly occurs in legal, administrative, or procedural discourse, as well as everyday dialogue. Depending on the nuance, speakers may choose synonyms such as anular, revocar, or declarar inválido, but invalidar and its past form invalidaste are widely understood.

Examples: "Tú invalidaste el certificado al marcarlo como no válido." "Si invalidaste la firma, el documento podría ser rechazado." These constructions illustrate how the word conveys the action of negating validity in the past by the subject you.

See also: invalidar, anular, válido, inválido, firma, certificado.