Inklingo
A colorful storybook illustration showing a close-up of two different hands firmly gripping each other in a handshake, symbolizing a guarantee or commitment.

garantizo

gah-rahn-TEE-soh

verbA2spelling-change (z to c) ar
I guarantee?to assure or promise
Also:I assure?to confirm with confidence,I warrant?legal/commercial context

Quick Reference

infinitivegarantizar
gerundgarantizando
past Participlegarantizado

📝 In Action

Yo garantizo que el producto llegará mañana.

A2

I guarantee that the product will arrive tomorrow.

Si lo haces a mi manera, te garantizo el éxito.

B1

If you do it my way, I guarantee you success.

No garantizo nada, pero haré lo mejor posible.

B1

I don't guarantee anything, but I will do my best.

Word Connections

Synonyms

  • aseguro (I assure)
  • prometo (I promise)

Common Collocations

  • Yo garantizo la calidadI guarantee the quality
  • Yo garantizo el reembolsoI guarantee the refund

💡 Grammar Points

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'.

❌ Common Pitfalls

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.

⭐ Usage Tips

Strong Commitment

'Garantizo' is a strong word. Use it when you want to sound very confident or are making an official promise, especially in business or formal settings.

🔄 Conjugations

indicative

present

él/ella/ustedgarantiza
yogarantizo
garantizas
ellos/ellas/ustedesgarantizan
nosotrosgarantizamos
vosotrosgarantizáis

imperfect

él/ella/ustedgarantizaba
yogarantizaba
garantizabas
ellos/ellas/ustedesgarantizaban
nosotrosgarantizábamos
vosotrosgarantizabais

preterite

él/ella/ustedgarantizó
yogaranticé
garantizaste
ellos/ellas/ustedesgarantizaron
nosotrosgarantizamos
vosotrosgarantizasteis

subjunctive

present

él/ella/ustedgarantice
yogarantice
garantices
ellos/ellas/ustedesgaranticen
nosotrosgaranticemos
vosotrosgaranticéis

imperfect

él/ella/ustedgarantizara
yogarantizara
garantizaras
ellos/ellas/ustedesgarantizaran
nosotrosgarantizáramos
vosotrosgarantizarais

✏️ Quick Practice

💡 Quick Quiz: garantizo

Question 1 of 1

Which sentence correctly uses 'garantizo' to make a promise?

📚 More Resources

Word Family

Frequently Asked Questions

Why does the base verb 'garantizar' have a 'z' but sometimes changes to 'c'?

This is a spelling rule in Spanish! The letter 'z' always sounds like 's' (or 'th' in some regions) but it cannot be placed before the letters 'e' or 'i'. To keep the same sound when conjugating (like in 'garanticé' or 'garantice'), the 'z' must change to a 'c'.

Can I use 'garantizo' instead of 'prometo' (I promise)?

Yes, but 'garantizo' is generally stronger and more formal than 'prometo.' 'Prometo' is a simple promise, while 'garantizo' implies a certainty or backing (like a warranty).