The -OUR Triphthong Rule: Say Hour, Flower, Shower, and Power Like a Native

A Second English Triphthong

English has a small set of triphthongs – vowel glides with three positions fused into one. You already know -IRE as in fire. Its sister triphthong is -OUR, heard in hour, flower, shower, power, and written in several different spellings.

The -OUR Rule: In words where OW or OUR are stressed, the pronunciation is /aʊər/, a glide that steps through three vowels: /a/ → /ʊ/ → /ər/.

This is why hour, flower, shower, tower, and power rhyme. Once you can glide through /aʊər/ without stopping, all of them become automatic.

How the Triphthong Moves

Feel your mouth take three steps:

1. /a/ – open your mouth wide, as in the start of now.
2. /ʊ/ – round your lips quickly toward the vowel of book.
3. /ər/ – relax into the neutral schwa colored by /r/.

Now let the three steps flow together as one motion. The result is /aʊər/ – a smooth downhill slide ending in an R-flavored schwa.

Core -OUR Words

Why OW, OUR, and OUER Share the Same Sound

English spelling does not have a dedicated letter combo for /aʊər/. Instead, it recycles existing sequences. The triphthong shows up under several disguises:

Flour vs Flower: True Homophones

One of the fun consequences of this rule is that flour (the baking ingredient) and flower (the plant bloom) sound exactly alike: /ˈflaʊər/. Context is the only thing that tells them apart.

Native speakers do not slow down or over-articulate to distinguish them. You should not either.

One Syllable or Two?

Just like -IRE words, -OUR words can be spoken in one smooth syllable or gently broken into two:

• Fast, casual: hour = /aʊər/
• Careful, deliberate: hour = /ˈaʊ.ər/

Both are standard. The important thing is keeping the triphthong connected. Do not insert a hard pause.

Stressed vs Unstressed

When the OUR vowel is not stressed, the triphthong collapses just like -IRE does. Examples:

• honor /ˈɑːnər/ – unstressed, reduces to /ər/
• labor /ˈleɪbər/ – unstressed, reduces to /ər/
• neighbor /ˈneɪbər/ – unstressed, reduces to /ər/
• favor /ˈfeɪvər/ – unstressed, reduces to /ər/

So hour is /ˈaʊər/, but honor is /ˈɑːnər/. The difference is stress position and vowel origin.

Tricky Exceptions

1. Four, Pour, and Court

Even though they contain OUR, these words are NOT triphthongs. They use the /ɔːr/ vowel:

• four /fɔːr/ – rhymes with door, not with hour.
• pour /pɔːr/ – same vowel as core.
• your /jʊr/ or /jɔːr/ – not /aʊər/.
• court /kɔːrt/ – same vowel as short.

The key clue: these words come from a different spelling tradition. If the word rhymes with door, treat it as /ɔːr/, not /aʊər/.

2. Tour and Poor

These use the /ʊr/ vowel. Neither is a triphthong.

• tour /tʊr/ – like moor.
• poor /pʊr/ – like sure.

3. Scour, Devour, Dour

These DO follow the triphthong rule: /skaʊər/, /dɪˈvaʊər/, /daʊər/.

How to Practice

1. Say now /naʊ/.
2. Add ear /ɪər/ after it: now-er.
3. Smooth them into nower. That gliding finish is the triphthong.
4. Replace the N with other consonants: hour, flour, flower, shower, power, tower.
5. Run phrases: an hour of power, shower with flowers, sour flour.

For Romance and German Speakers

Most languages do not have triphthongs as a regular feature, so this pattern often gets simplified. Common transfer mistakes:

• Saying hour like our with a hard R: /awr/ instead of /aʊər/.
• Turning flower into two hard syllables: FLOW-ER, cutting the glide.
• Pronouncing sour as /sɔːr/ (rhyming with core) because it looks similar to Romance O plus R.

The fix is to trust the glide and not overthink it. Think of now → nower, and transfer that motion to every -OUR word.

Takeaways

1. The triphthong /aʊər/ appears in -OUR, -OWER, and a few -OUER spellings.
2. Hour, our, flour, flower, shower, tower, power, sour all share this exact glide.
3. The vowel can be one syllable or two, but never two separate words.
4. Four, pour, tour, and poor do NOT follow the rule.
5. Master the glide once, and a whole family of high-frequency words lines up perfectly.