How to Say "to unfasten" in Spanish
The Spanish word for “to unfasten” is “soltar” — A2 level. This is a very common word in everyday Spanish.
English → SpanishA2
verbA2
a seatbelt, knot

Examples
Solté el globo por accidente y voló muy alto.
I accidentally let go of the balloon and it flew very high.
El policía soltó al detenido porque no había pruebas.
The police officer released the detainee because there was no evidence.
Stem-Change Alert
In the present tense, the 'o' in the root changes to 'ue' (soltar -> suelto), except for the 'nosotros' and 'vosotros' forms.
Confusing Physical vs. Emotional Release
Mistake: “Using 'dejar' when you mean 'soltar' (physical grip).”
Correction: 'Dejar' means 'to leave' or 'to allow.' Use 'soltar' for dropping or releasing a physical object.
Related Translations
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