Dopamine, Serotonin, Oxytocin: Say Science Words You Learned by Reading

If you read a lot in English, you probably have a strange private dictionary: hundreds of words you understand perfectly but do not trust yourself to say.

You can read dopamine in an article. You can understand serotonin in a podcast title. You can recognize oxytocin in a health video. Then the word appears in a real conversation and your mouth suddenly files a complaint.

This is not a small problem. One learner on Reddit described exactly this habit: they guessed pronunciations for words such as “dopamine, serotonin, oxytocin” while reading, then later found that people sometimes could not understand the guessed version (Reddit discussion). The signal is anecdotal, not a study, but I see the same pattern often with advanced English learners: reading vocabulary grows faster than speakable vocabulary.

Here is a clean way to fix it without turning every new word into a 20-minute research project.

The rule: do not let spelling be your coach

English spelling is useful, but it is a dangerous pronunciation teacher. It hides stress. It suggests vowels that are not there. It makes every syllable look equally important.

Take these three words:

• dopamine: usually DOH-puh-meen or DOH-puh-min, depending on accent and dictionary style
• serotonin: seh-ruh-TOH-nin
• oxytocin: ok-see-TOH-sin

The spelling tempts many learners to give every vowel a full, careful sound. Native and fluent speakers usually do the opposite: they choose one main stressed syllable, then make the other syllables lighter.

That is why the first question is not “How do I say each letter?” It is:

Which syllable carries the word?

Step 1: mark the stress before you repeat

Before you say a new word ten times, mark the stress.

Use capital letters for the strongest syllable:

• DO-pa-mine
• se-ro-TO-nin
• ox-y-TO-cin

Now say only the stressed syllable first:

• DO
• TO
• TO

Then add the rest quietly around it:

• DO-puh-meen
• seh-ruh-TO-nin
• ok-see-TO-sin

This looks too simple. Good. Pronunciation practice often fails because learners try to fix five things at once: spelling, IPA, mouth position, accent, speed, confidence. For a new word, start with stress. If the stress is wrong, the whole word can sound unfamiliar even when the individual sounds are close.

For checking stress, use a dictionary or pronunciation source rather than guessing. Google added pronunciation practice in Search with audio models and feedback for some words (Google Search blog). Forvo is useful when you want native-speaker recordings of individual words, and YouGlish is useful when you want to hear a word inside real sentences rather than as a dictionary item.

Step 2: listen three ways, not thirty times

Do not fall into the trap of replaying one audio clip again and again while your attention gets blurrier. Listen three ways:

1. Dictionary speed: hear the clean version.
2. Real sentence: hear the word inside normal speech.
3. Your recording: hear the distance between your version and the model.

For example, search YouGlish for “serotonin” and listen for the few words before and after it. You may hear something like:

“It affects se-ro-TO-nin levels.”

The word is not floating alone. It is attached to grammar, rhythm, and meaning. That matters because many learners can pronounce a word in isolation, then lose it when the sentence gets longer.

Apps can help here, but use them for the right job. ELSA says its Speech Analyzer gives feedback on pronunciation, fluency, stress, and intonation (ELSA). BoldVoice describes AI feedback combined with lessons from accent coaches (BoldVoice). Speechling offers coach feedback on recorded practice, with human correction rather than only a score (Speechling help). Those tools can be useful, but the score is not the whole lesson. Your job is to turn feedback into one clear next action.

Step 3: put the word into a sentence you might actually say

A word is not finished when you can repeat it alone. It is finished when you can use it in a sentence without slowing down so much that the conversation stops.

Use sentences from your life, not random textbook lines.

Try these:

• “I read that dopamine affects motivation.”
• “The article mentioned serotonin and sleep.”
• “They were talking about oxytocin after childbirth.”
• “I’m not sure I’m pronouncing dopamine correctly.”

That last sentence is a secret weapon. If you are unsure of a word, practice a sentence that lets you ask naturally. Good speakers do this all the time. They do not pretend to know every pronunciation; they repair smoothly.

Now record the sentence twice:

• once slowly, with clear stress
• once at normal conversation speed

If the word collapses at normal speed, do not slow the whole sentence down. Instead, make the stressed syllable stronger and the unstressed syllables lighter.

For serotonin, many learners overwork the first two syllables: SEH-ROH-toh-nin. Try making them smaller:

seh-ruh-TOH-nin

You are not swallowing the word. You are giving it shape.

Step 4: make a “read-only vocabulary” list

Open a note on your phone called Words I know but avoid saying.

Add words when you notice them. Use four columns:

• Word: serotonin
• Where I need it: doctor appointment, psychology podcast, small talk
• Stress: se-ro-TO-nin
• My sentence: “The podcast talked about serotonin.”

Do not add fifty words. Keep the list small enough that you can actually practice it. Five words per week is plenty.

Good categories:

• health words: dopamine, serotonin, inflammation, metabolism
• work words: architecture, hierarchy, asynchronous, deprecated
• academic words: hypothesis, methodology, qualitative, literature
• names and places: Sean, Siobhan, Worcester, Edinburgh

For names and place names, spelling is especially unreliable. Forvo can be helpful because it collects pronunciations from speakers around the world (Forvo about page). If you need the word in a natural phrase, check YouGlish afterward.

A five-minute drill for one new word

Use this when you meet a word you understand but would avoid saying.

Minute 1: check

Look up the pronunciation. Write the stressed syllable in capital letters.

Minute 2: strip it down

Say only the stressed syllable five times. Then add the weak syllables around it.

Minute 3: listen in a sentence

Find one real example. Notice the word before it and the word after it.

Minute 4: record your sentence

Use a sentence you could actually say this week.

Minute 5: repair one thing

Do not fix everything. Choose one target: stress, one vowel, final consonant, or speed.

If you use SoundNativ or another pronunciation tool, this is the moment to record the full sentence, not just the single word. Single-word practice is useful, but conversation lives in phrases.

Quick practice set

Try this now. Mark the stress, then say the sentence.

1. metabolism: me-TA-bo-lism

“My metabolism changed after I started exercising.”

1. inflammation: in-fla-MA-tion

“The doctor mentioned inflammation.”

1. hierarchy: HI-er-ar-chy

“The team hierarchy is not very clear.”

1. asynchronous: a-SYN-chro-nous

“We prefer asynchronous updates.”

1. qualitative: QUA-li-ta-tive

“It was a qualitative study.”

Now ask yourself: which word did you know from reading but hesitate to say? That is tomorrow’s practice word.

The goal is not to make every word perfect. The goal is to stop carrying a silent vocabulary around in your head. If you can read a word, check it, stress it, and put it into one useful sentence, it becomes available when you speak.