rían
Rían is the third-person plural imperfect indicative form of the Spanish verb reír, meaning "they were laughing" or "they used to laugh." The imperfect tense in Spanish expresses ongoing or habitual actions in the past rather than a completed event. The verb reír comes from Latin ridēre, and while reír is irregular in some tenses, its imperfect forms follow a regular pattern: reía, reías, reía, reíamos, reíais, reían. The form rían specifically corresponds to the ellos/ellas/ustedes subject in past continuous or habitual contexts.
Usage of rían is typical when describing past scenes in which laughter occurred as a continuing or