reaccionáis

Reaccionáis is the second-person plural form of the verb reaccionar in the present indicative in Spanish, corresponding to “you all react.” It is used when the pronoun vosotros is the subject, a form common in Spain and some parts of other Spanish-speaking regions. In dialects that use ustedes instead of vosotros, the corresponding form would be reaccionan.

Etymology and meaning: reaccionar comes from the base reacción, with the verbal suffix -ar forming a regular -ar verb. The sense is to respond to a stimulus, to act in response to something, or to undergo a reaction in a scientific or everyday context.

Conjugation pattern: Reaccionar is a regular -ar verb, so its present indicative forms are: yo reacciono, tú reaccionas, él/ella/usted reacciona, nosotros reaccionamos, vosotros reaccionáis, ellos/ellas/ustedes reaccionan. The form reaccionáis carries the stress on the -áis suffix.

Usage notes: Reaccionáis is used to describe how a group responds to events, information, or situations. Examples: “¿Qué hacéis? ¿Cómo reaccionáis ante esa noticia?” and “Las sustancias reaccionan entre sí.” In Spain, this form aligns with the tú-based/vosotros system; in Latin America, one would typically use reaccionan for ustedes.

See also: reaccionar, reacción, conjugation of regular -ar verbs, vosotros.