How to Say "i guarantee" in Spanish
The most common Spanish word for “i guarantee” is “garantizo” — use 'garantizo' when you are making a formal or contractual promise, often related to the quality, arrival, or performance of something.
Use 'garantizo' when you are making a formal or contractual promise, often related to the quality, arrival, or performance of something.
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Use 'aseguro' when you are making a firm promise or reassuring someone about a future event or situation in a more general context.
Learn more →gah-rahn-TEE-sohɡa.ɾanˈti.so
Examples
Yo garantizo que el producto llegará mañana.
I guarantee that the product will arrive tomorrow.
Si lo haces a mi manera, te garantizo el éxito.
If you do it my way, I guarantee you success.
No garantizo nada, pero haré lo mejor posible.
I don't guarantee anything, but I will do my best.
The 'Yo' Form
This word, 'garantizo,' is only used when you are the one doing the action, meaning 'I guarantee.' It's the standard present tense form.
Verb Structure
The base verb is 'garantizar' (to guarantee). Like most '-ar' verbs, the 'yo' form ends in '-o'.
Future Spelling Change
Mistake: “Using 'yo garantizo que haré' when you mean to guarantee the action itself, not your promise.”
Correction: Often, you need the subjunctive form after a guarantee if you are assuring a future action: 'Garantizo que (él) lo haga' (I guarantee he does it). However, for simple statements, 'garantizo que' plus the normal verb form is common.
ah-seh-GOO-roha.seˈɣu.ɾo
Examples
Yo te aseguro que la reunión empieza a las diez en punto.
I assure you that the meeting starts exactly at ten o'clock.
¿Estás seguro? Sí, te lo aseguro.
Are you sure? Yes, I guarantee it.
Use of 'Que'
When using 'aseguro' to guarantee a fact, you often follow it with 'que' before the rest of the sentence: 'Aseguro que es verdad' (I assure that it is true).
Choosing Between 'Aseguro' and 'Garantizo'
Learners often confuse 'aseguro' and 'garantizo' because both mean to assure or promise. The key difference lies in formality: 'garantizo' is stronger for official or business promises, like a warranty, while 'aseguro' is more common for personal assurances.
Related Translations
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