Every Spanish word has one syllable that is pronounced with more emphasis than the others. This is called the stressed syllable (sílaba tónica). The placement of stress can change the meaning of a word entirely (hablo "I speak" vs habló "he spoke"), so getting it right is essential. Fortunately, Spanish has only three rules that govern stress, and they cover every word in the language with no guesswork.
The Three Golden Rules
| Rule | Condition | Stressed Syllable |
|---|---|---|
| 1 | Word ends in a vowel, n, or s | Second-to-last (penúltima) |
| 2 | Word ends in any other consonant | Last (última) |
| 3 | Exception to Rules 1 and 2 | Marked by a written accent |
That is it. Memorize these three rules and you will be able to stress any Spanish word correctly on sight.
Rule 1: Words Ending in Vowel, N, or S
If a word ends in a vowel (a, e, i, o, u), the letter n, or the letter s, the stress falls on the second-to-last syllable. This category covers most Spanish words, including all noun plurals and most conjugated verbs.
| Word | Syllables | Stressed |
|---|---|---|
| casa | ca-sa | ca-sa |
| mesa | me-sa | me-sa |
| hablan | ha-blan | ha-blan |
| libros | li-bros | li-bros |
| estudiante | es-tu-dian-te | es-tu-dian-te |
La casa tiene muchas ventanas.
The house has many windows.
Words that follow Rule 1 are called palabras graves or llanas.
Rule 2: Words Ending in Any Other Consonant
If a word ends in any consonant other than n or s — so d, l, r, z, j, x, t, k, p, and so on — the stress falls on the last syllable.
| Word | Syllables | Stressed |
|---|---|---|
| hablar | ha-blar | ha-blar |
| comer | co-mer | co-mer |
| feliz | fe-liz | fe-liz |
| ciudad | ciu-dad | ciu-dad |
| reloj | re-loj | re-loj |
Quiero comer en la ciudad.
I want to eat in the city.
Soy muy feliz hoy.
I am very happy today.
Words that follow Rule 2 are called palabras agudas. Infinitive verbs (hablar, comer, vivir) are always agudas because they end in r.
Rule 3: Written Accents Mark Exceptions
When a word does not follow either of the two rules above, Spanish writes a tilde (acute accent) on the stressed vowel to show where the emphasis falls. This is the only reason a tilde exists on a Spanish word: to mark an exception.
| Word | Ends in | Stress | Why Accented |
|---|---|---|---|
| árbol | l | second-to-last | Should be last by Rule 2 |
| fácil | l | second-to-last | Should be last by Rule 2 |
| música | vowel | third-to-last | Should be second-to-last by Rule 1 |
| teléfono | vowel | third-to-last | Should be second-to-last by Rule 1 |
| habló | vowel | last | Should be second-to-last by Rule 1 |
| canción | n | last | Should be second-to-last by Rule 1 |
El árbol es muy alto.
The tree is very tall.
Ella habló con su madre.
She talked to her mother.
Words stressed on the third-to-last syllable (like música) are called palabras esdrújulas and always require a written accent, no exceptions.
How Stress Changes Meaning
Because stress can distinguish words, placing it correctly is not just cosmetic — it affects meaning. Compare these pairs:
| Unstressed/Accented | Stressed/Accented | Difference |
|---|---|---|
| hablo (I speak) | habló (he/she spoke) | present vs preterite |
| termino (I finish) | terminó (he/she finished) | present vs preterite |
| esta (this, fem.) | está (he/she is) | demonstrative vs verb |
| papa (potato) | papá (dad) | food vs family |
Yo hablo español.
I speak Spanish.
Él habló con su jefe.
He spoke with his boss.
See Also
- Written Accent Marks for details on when and how to write tildes.
- Syllable Division to correctly count syllables before applying stress rules.
Related Topics
- Written Accent MarksA2 — When and how to write the acute accent (tilde) on Spanish vowels
- Syllable DivisionA2 — Rules for dividing Spanish words into syllables