There are seven spanish alphabet letters with accents in everyday use: the five marked vowels á, é, í, ó, ú, plus ñ and ü. Only two of those three marks change how a word sounds. The acute ones do not.
That last part is where most people go wrong, and it is worth saying plainly before anything else. Learners meet á and assume it is a long a, or a harder a, or an a said with more force. It is none of those. The letter underneath is pronounced exactly as it always was. The mark is telling you which syllable to lean on, and nothing more.
Group them by what the mark does, not by letter
The usual way these get taught is alphabetically, which buries the one distinction that matters. Sorted by job, there are only three groups, and you can learn the whole set in about five minutes once you see them this way. Tap any letter in the table to hear it.
| Letter | Reads as | What the mark changes |
|---|---|---|
| á | a | Stress only — sound unchanged |
| é | e | Stress only — sound unchanged |
| í | i | Stress only — sound unchanged |
| ó | o | Stress only — sound unchanged |
| ú | u | Stress only — sound unchanged |
| ñ | eñe | A separate letter, new sound |
| ü | u con diéresis | Forces the u to be heard |
If the plain alphabet underneath is still new, our guide to the Spanish alphabet and how many letters it has covers the letter inventory itself, and the sounds English does not have piece handles the pronunciation side.
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The acute mark moves the stress, and sometimes the meaning
Spanish stress is regular enough that you can predict it. Words ending in a vowel, n or s are stressed on the second-to-last syllable; everything else is stressed on the last one. The acute mark exists for the words that break that pattern, which is why it lands where it does and never anywhere else.
Same verb, same letters, two different people and two different tenses, and the only thing separating them is the mark on the final o. Say hablo with the stress on the last syllable and you have said something else. This is the practical reason the acute accent is not optional decoration.
Pairs like this are common enough that you will hit one in your first week. The written mark is the only thing distinguishing the question word from the verb. For the full set of stress rules and how to type any of these on a phone or keyboard, our guide to Spanish accent marks goes through them properly.
Ñ is not an N with a hat on it
It is its own letter with its own name, eñe, its own dictionary section and its own sound — roughly the ny in canyon, made by pressing the middle of your tongue flat against the roof of your mouth. Treating it as a decorated n is the single most common mistake with accented letters in Spanish, and it produces real misunderstandings rather than just an accent.
Drop the mark there and año becomes ano, which does not mean year. Spanish speakers will work out what you meant, but it is the kind of thing worth getting right early, and it is the best argument there is for learning to type the mark properly instead of skipping it.
Ü is the quiet one, and the only mark that adds a sound
The dieresis appears on a handful of words and does one job: it tells you to pronounce a u that would otherwise be silent. In the combinations gue and gui the u is there to keep the g hard, and you do not say it. Put two dots on it and you do.
Compare guitarra, where the u is silent, with pingüino, where it is not. You will meet maybe a dozen of these words as a beginner. Learn them as individual words rather than as a rule, because the rule only ever applies in those two letter combinations.
What not to do with any of them
Do not add marks you are unsure about
An unnecessary acute changes the stress and makes the word harder to understand than leaving it off. If you cannot remember whether a word carries one, write it plain. Guessing moves the emphasis to a syllable a listener is not expecting.
Do not strip them in anything that matters
Spanish alphabet accents are standard orthography, not optional styling. Writing without them reads to a native speaker roughly the way all-lowercase reads in English: understandable, visibly careless. Every phone keyboard produces them by holding the base letter down.
Do not sort them separately
A dictionary treats á as a, so acción sits where you expect under a. Ñ is the exception and gets its own block after n, which is why año appears after anual rather than next to ano. It catches people out exactly once.
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