Do accent marks matter in Spanish?

By Mert Yerekapan · Updated

Yes, accent marks matter in Spanish, mostly in writing. They show which syllable gets the stress and they separate words that would otherwise look identical, like si (if) and sí (yes). Leaving them off won't make you unintelligible in a text message, but it will look sloppy in anything formal, and sometimes it changes the meaning.

What they actually do

An accent mark (tilde) does one of two jobs.

  1. It marks stress on a syllable that wouldn't normally carry it.
  2. It tells two words apart that are spelled the same.

The ñ is different: it's a separate letter, not an accent. Año (year) and ano (anus) are different words, so don't drop the tilde there.

The stress rules, simplified

Spanish stress is predictable, which is why you can pronounce a word you've never seen before.

  • Words ending in a vowel, n or s are stressed on the second-to-last syllable: casa, hablan, lunes.
  • Words ending in any other consonant are stressed on the last syllable: ciudad, hablar, español.
  • Any word that breaks those patterns gets a written accent: café, canción, árbol, teléfono.

So canción needs the accent because it ends in n but is stressed on the last syllable. And árbol needs it because it ends in a consonant but is stressed on the first.

Words that change meaning

A small set of words are told apart only by the accent:

Without With
el (the) él (he)
tu (your) tú (you)
mi (my) mí (me, after a preposition)
si (if) sí (yes)
se (reflexive pronoun) sé (I know)
de (of) dé (give, formal command)
mas (but) más (more)

Examples: Tú tienes tu libro (You have your book). Para mí, sí (For me, yes). No sé si viene (I don't know if he's coming).

Question words

Question and exclamation words take an accent: qué, quién, cómo, dónde, cuándo, cuánto. Compare ¿Qué quieres? (What do you want?) with Dijo que vendría (He said that he'd come). The same accent shows up in indirect questions: No sé dónde vive (I don't know where he lives).

Do you need them when you type?

My honest opinion: learn them, but don't let them slow you down early on. In chat, many native speakers skip them, especially on phones. In school, at work and on exams, they're expected. And if you're learning to read, they actually help: they tell you exactly how to say the word.

What I'd recommend:

  • Don't stress over typing them while you're a beginner, but add them when you write anything formal.
  • Use your phone keyboard. Hold down a vowel to get á, é, í, ó, ú and ñ.
  • Learn the stress rules once. They take about ten minutes and save you years of guessing.

What about speaking?

When you speak, the stress is what matters, not the mark. Putting the stress on the wrong syllable can confuse people: hablo (I speak) vs habló (he spoke) are only different because of where the emphasis falls. The tilde just writes down what your mouth does.

It helps to see a word while you hear it. I'm biased since I made Langtok, but its subtitles highlight each word as it's spoken, and you can slow a story down to 0.75x to catch where the stress falls.

If you're building pronunciation from scratch, the hardest Spanish sounds is a good next step.

Related questions