tranquilizasteis

Tranquilizasteis is the second-person plural form in the preterite indicative of the Spanish verb tranquilizar. It translates roughly as “you all calmed” or “you all reassured,” and is primarily used in Spain where the vosotros form is standard. In Latin American Spanish, the corresponding past tense for ustedes is tranquilizaron.

Morphology and pronunciation: tranquilizasteis is built from the stem tranquiliz- plus the preterite ending -asteis. The verb tranquilizar follows the regular -ar verb pattern in the preterite for vosotros, with the usual -asteis ending. The yo form is tranquilicé, reflecting the spelling change c → qu in the first-person singular. Thus the full preterite paradigm for tranquilizar includes yo tranquilicé, tú tranquilizaste, él tranquilizó, nosotros tranquilizamos, vosotros tranquilizasteis, ellos tranquilizaron.

Usage notes: This form denotes a completed past action performed by or on behalf of “you all.” It can take a direct object, as in “tranquilizasteis a los niños” (you all calmed the children), or refer to someone calming the speaker, as in “me tranquilizasteis.” While it is common in Spain, those who do not use vosotros would use the ustedes form instead.

See also: tranquilizar, preterite tense, vosotros forms, standard Latin American equivalents such as ustedes tranquilizaron.