How to Say "i swear" in Spanish
The Spanish word for “i swear” is “juro” — A2 level. This is a very common word in everyday Spanish.

Examples
Te juro que no fui yo.
I swear it wasn't me.
Juro que voy a estudiar más para el examen.
I promise I'm going to study more for the exam.
Lo juro por mi vida, es la verdad.
I swear on my life, it's the truth.
The 'I' Form of a Verb
'Juro' is the 'yo' (I) form of the verb 'jurar' (to swear). In Spanish, the ending of the verb often tells you who is doing the action, so you can say 'Juro' without needing to say 'Yo juro'.
Connecting Your Promise with 'que'
You'll often see 'juro que...' followed by another phrase. The word 'que' acts like the English word 'that' to connect your promise to what you're promising. For example, 'Juro que es verdad' means 'I swear that it's true'.
Using it Too Casually
Mistake: “Using 'juro' for unimportant things all the time, like 'Juro que dejé las llaves en la mesa.'”
Correction: 'Juro' is a strong word. While common, using it too much can make you sound overly dramatic or insincere. Save it for when you really want to emphasize something important.
Related Translations
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