cometer

A common verb almost always paired with a negative noun — cometer un error, cometer un delito, cometer una injusticia — meaning to commit or make that mistake, crime, or wrongdoing.

• Todos cometemos errores alguna vez. — We all make mistakes sometimes.
• El acusado cometió el robo de madrugada. — The accused committed the robbery in the early morning.
• Cometió una injusticia al despedirlo sin motivo. — He committed an injustice by firing him without cause.

English speakers sometimes try to use cometer more broadly the way "commit" works in English ("commit to a plan") — for that sense of dedication or promise, Spanish needs comprometerse, not cometer.

Often confused with comprometerse.