How to Say "they abandon" in Spanish
The Spanish word for “they abandon” is “dejan” — A1 level. This is a very common word in everyday Spanish.

Examples
Ellos siempre dejan los platos sucios en la mesa.
They always leave the dirty dishes on the table.
Ustedes dejan la casa muy limpia después de la fiesta.
You all leave the house very clean after the party.
Mis vecinos dejan la música encendida cuando salen.
My neighbors leave the music on when they go out.
The 'ellos/ellas/ustedes' Form
This form 'dejan' is used for 'they' (ellos/ellas) or for the formal plural 'you' (ustedes). The ending -an is standard for regular -ar verbs in the present tense.
Mixing up 'dejar' and 'salir'
Mistake: “They say 'Dejan el restaurante' when they mean 'They leave the restaurant' (salir).”
Correction: Use 'dejar' when you leave *something* behind (Dejan su abrigo). Use 'salir' when you leave *a location* (Salen del restaurante).
Related Translations
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