How to Say "to skyrocket" in Spanish
The Spanish word for “to skyrocket” is “disparar” — B2 level. This is a very common word in everyday Spanish.

Examples
Tras el anuncio, las acciones se dispararon en la bolsa.
After the announcement, stocks skyrocketed on the market.
La fiebre del niño se disparó de repente, tuvimos que ir al hospital.
The child's fever shot up suddenly; we had to go to the hospital.
The Reflexive Use ('Se')
When 'disparar' means 'to skyrocket,' it must be used reflexively with 'se' (dispararse). This shows that the action (the rapid increase) happened to the subject itself, often without a clear external agent.
Missing the 'Se'
Mistake: “Saying 'Los precios dispararon' (Prices shot/fired [something]).”
Correction: You must use the reflexive form: 'Los precios se dispararon' (Prices skyrocketed). This removes the transitive meaning of 'firing' something.
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