adjective

peligroso

dangerous

Describe algo que puede causar daño o hacer que alguien se lastime.

Definition & meaning

Peligroso means dangerous: likely to cause harm, injury, or damage. It can describe a person, animal, situation, place, or action.

  • Un perro peligroso — A dangerous dog.
  • Es peligroso conducir con sueño — It is dangerous to drive while sleepy.

Grammar & Word origin

Peligroso is an adjective that agrees with the noun it describes:

  • Masculine singular: peligroso
  • Feminine singular: peligrosa
  • Masculine plural: peligrosos
  • Feminine plural: peligrosas

It comes from peligro (“danger”) and the suffix -oso, which conveys the idea of having a quality.

Synonyms & antonyms

Synonyms:

  • arriesgado — risky; emphasizes the chance of a bad outcome, especially in an action or decision.
  • inseguro — unsafe; emphasizes a lack of safety or protection.
  • dañino — harmful; emphasizes the damage something causes rather than the risk it poses.

Antonyms:

  • seguro — safe; free from danger or risk.
  • inofensivo — harmless; unlikely or unable to cause harm.

Common phrases & collocations

  • una situación peligrosa — a dangerous situation
  • un animal peligroso — a dangerous animal
  • ser peligroso para — to be dangerous for or to
  • un delincuente peligroso — a dangerous criminal

Make “peligroso” part of your vocabulary.

Build your Spanish vocabulary with flashcards, audio and spaced repetition.

Examples

Es peligroso caminar solo por la noche.adjective

It is dangerous to walk alone at night.

Nadar en ese río es peligroso porque hay corrientes fuertesadjective

Swimming in that river is dangerous because there are strong currents.

Es peligroso nadar en el río sin supervisión.adjective

It is dangerous to swim in the river without supervision.

Este es un bosque peligroso.adjective

This is a dangerous forest.

Las carreras ilegales son peligrosas.adjective

Illegal races are dangerous.

Es peligroso correr con tijeras.adjective

It is dangerous to run with scissors.

Keep exploring Spanish

Learn words from the content you love.

Add words from websites, books and videos, then remember them with spaced repetition (SRS).