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

Examples
Cuidado, el perro es peligroso.
Be careful, the dog is dangerous.
Conducir con nieve es muy peligroso.
Driving in the snow is very dangerous.
Es una situación peligrosa para la economía del país.
It's a dangerous situation for the country's economy.
Matching the Noun: `peligroso` vs. `peligrosa`
Like most Spanish describing words, peligroso changes to match the thing it describes. Use peligroso for masculine things (un camino peligroso) and peligrosa for feminine things (una idea peligrosa).
Using `ser` vs. `estar`
Mistake: “La calle está peligrosa.”
Correction: Use `ser` (es peligroso) for something that is *always* dangerous, part of its nature. Use `estar` (está peligroso) for a *temporary* danger. For example: 'El mar *es* peligroso' (The sea is generally dangerous) vs. 'El mar *está* peligroso hoy' (The sea is dangerous today because of a storm).
Related Translations
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