How to Say "release it" in Spanish
The Spanish word for “release it” is “suéltalo” — B1 level. This is a very common word in everyday Spanish.

Examples
¡Suéltalo! Me estás haciendo daño con esa llave.
Let go of it! You are hurting me with that key.
Sé que tienes un secreto. ¡Vamos, suéltalo de una vez!
I know you have a secret. Come on, spit it out already!
El perro tiene el juguete. No quiere soltarlo, pero tienes que decirle: '¡Suéltalo!'
The dog has the toy. It doesn't want to drop it, but you have to tell him: 'Drop it!'
A Verb and a Pronoun Fused
Suéltalo is one word but is actually the informal command 'suelta' (you release) combined with the direct object pronoun 'lo' (it). It means 'release it'.
The Mandatory Accent Mark
When you attach a pronoun (or pronouns) to an affirmative command, you must add an accent mark (tílde) to the verb to keep the stress on the correct syllable—in this case, on 'suél'.
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