olvidaste

Olvidaste is a conjugated form of the Spanish verb olvidar, meaning you forgot. It is the second-person singular form in the pretérito indefinido (simple past) used to indicate that the subject forgot something at a specific past time. The infinitive olvidar is a regular -ar verb; in the tú form the past tense ending is -aste, yielding olvidaste. The stress pattern follows the general rule for Spanish verb endings, with the emphasis on the syllable das in this form.

Etymology and usage notes: olvidar derives from the Latin oblivīscī, meaning to forget, through the evolution of Old and modern Spanish. Olvidaste is routinely used in everyday speech across Spanish-speaking regions to reference a past act of forgetting. It commonly takes a direct object, such as a person or a thing, as in olvidaste las llaves (you forgot the keys) or olvidaste mencionar algo importante (you forgot to mention something important). It can appear in questions and exclamations: ¿Olvidaste la cita? or ¡Olvidaste por completo!

Related forms and contrasts: olvidar (infinitive), olvido (noun meaning memory or forgetfulness), olvidé (I forgot), olvidaba (I used to forget). For different past nuances, other tenses or aspects are used, such as imperfect olvidabas (you used to forget) or the present tense olvidas (you forget).

See also: olvidar, pretérito indefinido, and the broader conjugation of olvidar.