decidíais

Decidíais is the second-person plural form (vosotros) of the pretérito imperfecto de indicativo of the verb decidir in Spanish. It denotes actions that were ongoing, habitual, or repeated in the past, within contexts where the informal plural “vosotros” is used (primarily in Spain). The imperfect tense expresses background information or repeated past actions rather than a single completed event.

Morphology and usage: Decidir is a regular -ir verb, and in the imperfect the endings are -ía, -ías, -ía, -íamos, -íais, -ían. For vosotros the form is decidíais, with an accent on the í to indicate the correct stress. In many parts of Latin America, where vosostros is not common, the corresponding imperfect form for ustedes is decidían, or simplemente decidían in everyday usage.

Etymology: Decidir comes from the Latin decidere, meaning to cut off or determine, and has evolved in Spanish to mean to decide or determine something.

Regional notes: Decidíais is characteristic of Spain. In Latin American varieties, ustedes decidían would be the standard imperfect form for the same subject.

Examples:

- Cuando éramos jóvenes, vosotros decidíais qué juegos jugar.

- En aquellas reuniones, decidíais vosotros la agenda de la tarde.

See also: The present tense form decidís corresponds to vosotros, while the imperfect forms for other persons are decidía, decidías, decidía, decidíamos, decidíais, decidían.