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English Word Stress Rules, with Examples and Audio

Every English word of more than one syllable has one syllable that is louder, longer and higher than the rest. Getting it wrong is the pronunciation error that most reliably stops a listener understanding you — more than any individual sound. These 8 rules cover the great majority of multi-syllable English words, and every example below was checked against the transcription we publish for it.

8 rulesVerified against real transcriptionsAudio on every exampleNoun/verb stress shifts

Written and reviewed by Vugar Novruzov, Academy Director · How we write our lessons

About the audio. Every 🔊 button uses your device's own British-English speech synthesiser — nothing is downloaded and it works offline. It is a synthetic voice, so treat it as a model of the sound rather than as a recording of a specific speaker, and check anything that surprises you against the written transcription beside it.

Why stress matters more than sounds

Ask a native speaker to identify a word said with one wrong vowel and they will usually manage it. Ask them to identify the same word with the stress moved one syllable and they often cannot — they will hear a word they do not know. English listeners locate words in the stream of speech by their stress pattern first and their individual sounds second, so a stress error does not degrade the signal, it destroys the address.

Stress also drives everything else. The stressed syllable keeps its full vowel; the unstressed ones collapse towards schwa. So deciding where the stress goes decides how the whole word sounds, which is why photograph, photographer and photographic — one root, three stress positions — sound like three unrelated words. Learn the stress and the vowels largely follow.

1. Most two-syllable nouns and adjectives: stress the first syllable

About four out of five two-syllable nouns and adjectives in English put the stress on syllable one. It is the default, and guessing it will make you right far more often than not.

2. Words ending -tion, -sion, -cian: stress the syllable before the ending

The ending itself is never stressed. Count back one syllable from it and put the stress there — the rule holds across the whole family, including words you have never met.

3. Words ending -ity: stress three syllables from the end

Adding -ity pulls the stress forward, which is why “able” and “ability” sound so unrelated. The stress lands on the syllable before the “-i-”.

4. Words ending -ic and -ical: stress the syllable before the “-ic-”

Same mechanism as -tion, and the “-al” makes no difference to it: the stress lands on the syllable in front of the “-ic-” either way, one from the end in academic and two from the end in medical.

5. Words ending -ology and -ography: stress the syllable before it

These endings behave as one block, so the stress falls on the syllable immediately in front of the “-o-”. Once you hear it in “biology” you have it for every word in the family.

6. Words ending -ee and -eer: stress the ending itself

A short list of endings breaks the usual pattern and pulls the stress onto itself, right at the end of the word. It is what makes the last syllable the loudest part of engineer and volunteer — the opposite of everything above.

7. Two-syllable verbs with a prefix: stress the second syllable

Verbs built on a prefix — re-, de-, dis-, ex-, in-, con-, pre- — put the stress after it. This is the mirror image of the noun rule above, and it is what produces the noun/verb pairs in the next section.

8. Compound nouns: stress the first word

When two nouns join into one idea, the first one takes the stress. “A GREENhouse is a building; a green HOUSE is a house that is green” — the stress carries the whole distinction.

Same spelling, different stress: nouns against verbs

A closed set of two-syllable words is a noun when the stress falls at the front and a verb when it falls at the back. The vowels change with it — the unstressed syllable reduces — so the two forms are genuinely different words to the ear even though they are identical on the page. Our vocabulary lists carry one transcription for each of these, whichever form the example sentence uses; that form is labelled below, and the other follows from the rule.

The schwa is the other half of this page

Stress is not only about making one syllable stronger. It is equally about making the others weaker, and English does that by replacing their vowels with schwa /ə/ — the neutral, effortless vowel of the second syllable of water and the first of about. A learner who stresses the right syllable but gives every other syllable its full spelled-out vowel still sounds wrong, because the contrast between the strong syllable and the weak ones is what makes the stress audible.

This is genuinely liberating once you accept it: most of the vowels in a long English word do not need to be pronounced accurately at all. Comfortable is /ˈkʌm.fə.tə.bəl/ — one real vowel and three schwas, four syllables where the spelling suggests five. Trying harder on the weak syllables makes your English less clear, not more.

Stress in sentences, briefly

Word stress has a bigger sibling. Inside a sentence, English stresses the words carrying information — nouns, main verbs, adjectives, adverbs, question words — and reduces almost everything else. Articles, prepositions, auxiliaries and pronouns shrink towards schwa, which is why a cup of tea comes out closer to “a cup-uh tea” and why can in a positive sentence is barely audible while can't is unmistakable.

You do not need to produce this deliberately — it tends to arrive by itself once word stress is solid. You do need to expect it when listening, because it is the main reason natural speech seems too fast. Our graded stories and the guide on understanding native speakers both work on that side of it.

Questions about English word stress

What is word stress in English?

One syllable in every multi-syllable English word is said louder, longer and at a higher pitch than the others. That syllable is the stressed one, and the vowels in the syllables around it are usually reduced to a schwa. English listeners use the stressed syllable to identify the word, which is why misplacing it causes more trouble than mispronouncing a sound.

How do I know which syllable to stress?

Three ways, in order of usefulness. First, the ending: -tion, -ity, -ic and several others fix the stress mechanically, and the rules on this page cover most multi-syllable words you will meet. Second, the word class: two-syllable nouns usually take the stress at the front, two-syllable verbs with a prefix at the back. Third, the dictionary — the ˈ mark in a transcription is exactly this information.

Why does “photograph” sound so different from “photography”?

Because -y in photography pulls the stress onto the second syllable, and every vowel that loses its stress collapses to a schwa. The two words share a spelling and almost no sounds: /ˈfəʊ.tə.ɡrɑːf/ against /fəˈtɒɡ.rə.fi/. This is the single clearest demonstration of why stress and vowel reduction are one topic rather than two.

Does the stress ever change the meaning of a word?

Yes — there is a set of two-syllable words that are nouns when stressed at the front and verbs when stressed at the back, such as record, present and increase. There is a section on them below. Beyond that set, wrong stress does not change the meaning so much as prevent the word being recognised at all.

What about stress in a whole sentence?

Sentence stress follows a different principle: content words — nouns, main verbs, adjectives, adverbs — are stressed, and function words such as of, to, the, are reduce to schwa in between. That rhythm is why English sounds fast even when the speaker is not talking quickly, and it is the main reason natural speech is hard to follow at first.

Are these rules reliable or just tendencies?

The suffix rules are close to exceptionless; the word-class rules are strong tendencies with real exceptions. Every example on this page was checked against the transcription we publish for that word, so what you see below is a set of examples that demonstrably follow the rule stated above them.

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