How to Say "on fire" in Spanish
The Spanish word for “on fire” is “ardiendo” — A2 level. This is a very common word in everyday Spanish.

Examples
El motor de la máquina estuvo ardiendo por unos segundos.
The machine's engine was burning for a few seconds.
Llegamos a la casa y la chimenea ya estaba ardiendo.
We arrived at the house and the fireplace was already blazing (burning).
¿Qué está ardiendo? Huele a humo.
What is burning? It smells like smoke.
Forming Continuous Tenses
Use 'ardiendo' with a conjugated form of 'estar' (to be) to show that the action of burning is ongoing: 'está ardiendo' (it is burning).
Invariable Form
This form never changes. It is always 'ardiendo,' regardless of whether the subject is singular or plural, masculine or feminine.
Confusing Ser and Estar
Mistake: “La leña es ardiendo.”
Correction: La leña está ardiendo. (Use 'estar' for temporary, ongoing actions like this.)
Related Translations
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