Master Accentuation Rules and Pronunciation
In Spanish, the accent mark (also called tilde or acento) is a diagonal line (´) placed over a vowel to indicate where the stress (emphasis) falls in a word. Understanding accents is crucial for proper pronunciation and even for distinguishing between words that would otherwise be spelled the same.
Before we dive into accent rules, we need to understand two key concepts: syllables and stress.
A syllable is a unit of pronunciation that contains a vowel sound. Words are divided into syllables, and each syllable is pronounced as a single unit.
ca-sa (2 syllables)
house
te-lé-fo-no (4 syllables)
telephone
sol (1 syllable)
sun
com-pu-ta-do-ra (5 syllables)
computer
Stress is the emphasis placed on one particular syllable in a word. In every Spanish word with more than one syllable, one syllable is pronounced with more force than the others. This is called the stressed syllable or sílaba tónica.
CA-sa
The stress is on the second-to-last syllable
te-LÉ-fo-no
The stress is on the third-to-last syllable
a-MI-go
The stress is on the second-to-last syllable
Spanish pronunciation is incredibly predictable once you learn these two simple rules. These rules tell you where to place the stress when pronouncing a word:
If a word ends in a vowel, -n, or -s, the stress falls on the second-to-last syllable (penultimate syllable).
CA-sa (ends in vowel)
house
HA-blan (ends in -n)
they speak
LI-bros (ends in -s)
books
a-MI-go (ends in vowel)
friend
CO-men (ends in -n)
they eat
LU-nes (ends in -s)
Monday
If a word ends in any consonant other than -n or -s, the stress falls on the last syllable.
ha-BLAR (ends in -r)
to speak
co-MER (ends in -r)
to eat
pa-PEL (ends in -l)
paper
ciu-DAD (ends in -d)
city
re-LOJ (ends in -j)
clock/watch
a-MOR (ends in -r)
love
You only write an accent mark when the word's pronunciation does NOT follow the two rules above. The accent mark tells you: "This word breaks the normal pattern—stress this syllable instead!"
te-LÉ-fo-no → teléfono
Ends in vowel, so stress should be on "no" (Rule 1), but it's on "lé" → needs accent
MÚ-si-ca → música
Ends in vowel, so stress should be on "si" (Rule 1), but it's on "mú" → needs accent
ja-MÓN → jamón
Ends in -n, so stress should be on "ja" (Rule 1), but it's on "món" → needs accent
in-GLÉS → inglés
Ends in -s, so stress should be on "in" (Rule 1), but it's on "glés" → needs accent
ÁR-bol → árbol
Ends in -l, so stress should be on "bol" (Rule 2), but it's on "ár" → needs accent
A-ZÚ-car → azúcar
Ends in -r, so stress should be on "car" (Rule 2), but it's on "zú" → needs accent
Spanish has specific names for words based on where the stress falls. While not essential for speaking, these terms are useful for understanding grammar explanations:
Stress on the last syllable
Stress on the second-to-last syllable
Stress on the third-to-last syllable
Stress on the fourth-to-last syllable (rare)
Quick tip: All esdrújulas and sobresdrújulas always carry an accent mark, because they break the natural stress patterns.
Some words carry an accent mark not to show where the stress falls (since they already follow the normal rules), but to distinguish their meaning from another word that is spelled the same way. These are called diacritical accents or acentos diacríticos.
the (article)
El libro es interesante.
he/him (pronoun)
Él es mi amigo.
your (possessive)
Tu casa es grande.
you (pronoun)
Tú eres amable.
my (possessive)
Mi perro es grande.
me (after preposition)
Es para mí.
reflexive pronoun
Se lava las manos.
I know (saber) / be (ser command)
Sé la respuesta.
you (pronoun)
Te quiero.
tea
Quiero té verde.
of/from (preposition)
Soy de México.
give (dar command/subjunctive)
Espero que me dé el libro.
if (conditional)
Si llueve, me quedo.
yes / himself/herself
Sí, quiero ir.
but (literary, rare)
Lo intenté, mas no pude.
more
Quiero más comida.
alone (adjective)
Estoy solo en casa.
only (adverb) - optional accent
Sólo quiero agua.
even (including)
Aun los expertos se equivocan.
still/yet (time)
Aún no llega.
When these words are used in questions or exclamations, they always carry an accent mark:
Compare: ¿Dónde vives? (Where do you live?) vs La casa donde vivo (The house where I live)
Understanding how vowels combine in Spanish is crucial for proper syllable division and accent placement.
Spanish vowels are classified as either strong or weak based on their pronunciation characteristics:
Strong vowels (A, E, O) are pronounced with more force and clarity. They can form syllables on their own and maintain their full sound when combined with other vowels. They are also called "open vowels" because the mouth opens more when pronouncing them.
Weak vowels (I, U) are pronounced with less force and can sometimes sound like consonants (like the "y" in "yes" or "w" in "water"). They often combine with strong vowels to form diphthongs. They are also called "closed vowels" because the mouth is more closed when pronouncing them.
A diphthong is when two vowels come together and are pronounced as one syllable. This happens in three situations:
Two weak vowels together form one syllable
ciu-dad (UI)
city
cui-dar (UI)
to take care
viu-da (IU)
widow
Weak vowel + strong vowel form one syllable (stress on strong)
pia-no (IA)
piano
tie-rra (IE)
earth
cuo-ta (UO)
quota
bue-no (UE)
good
Strong vowel + weak vowel form one syllable (stress on strong)
ai-re (AI)
air
eu-ro (EU)
euro
au-to (AU)
car
rei-na (EI)
queen
A hiatus occurs when two vowels come together but are pronounced as separate syllables. This happens in two main situations:
Two strong vowels next to each other are always separate syllables
le-o (EO)
I read
po-e-ta (OE)
poet
ca-er (AE)
to fall
te-a-tro (EA)
theater
When the weak vowel is stressed, it breaks the diphthong and requires an accent mark
dí-a → día (ÍA)
day - accent breaks the diphthong
pa-ís → país (ÍS)
country - accent breaks the diphthong
Ra-úl → Raúl (ÚL)
Raul (name) - accent breaks the diphthong
ma-íz → maíz (ÍZ)
corn - accent breaks the diphthong
re-ír → reír (ÍR)
to laugh - accent breaks the diphthong
ba-úl → baúl (ÚL)
trunk - accent breaks the diphthong
fi-lo-so-fí-a → filosofía (ÍA)
philosophy - accent breaks the diphthong
re-ú-ne → reúne (ÚE)
he/she gathers - accent breaks the diphthong
When a weak vowel (i, u) carries the stress next to a strong vowel (a, e, o), you must always write an accent mark on the weak vowel, even if it would normally follow the general stress rules. This accent serves two purposes:
Understanding accent rules is one thing, but perfecting your pronunciation requires practice with a native speaker. Our tutors can help you master these concepts and speak with confidence.