How to Say "reacts" in Spanish
The Spanish word for “reacts” is “responde” — B1 level.
English → SpanishB1
verb (conjugated)B1
A system or person reacts to something

Examples
El coche responde muy bien al acelerar en la autopista.
The car responds very well when accelerating on the highway.
El paciente no responde a los medicamentos.
The patient is not reacting to the medications.
Responding to Stimuli
When talking about how a non-human thing (like a medicine, machine, or environment) handles a situation, 'responde' means it reacts or performs in a certain way.
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