Esperanto h and ĥ are two separate, voiceless consonants. H is the breathy sound [h], made at the glottis like the beginning of English house. Ĥ is , made farther back when the tongue approaches the soft palate, like the sound in Scottish loch. The circumflex therefore marks a change of phoneme, not a “stronger h.”
The distinction belongs to Esperanto's larger one-letter–one-sound system. Every written h or ĥ should be heard, consonants do not create extra syllables, and stress still depends only on the vowels.
The two places of articulation
| Letter | Basic sound | Where it is made | Useful starting point |
|---|---|---|---|
| h | [h] | glottis | Begin a vowel with quiet breath |
| ĥ | soft palate / velum | Loosen the complete closure of k into friction |
For h, shape your mouth for the following vowel and let air pass through the open glottis before voicing begins: ha, he, hi, ho, hu. The tongue need not make a special obstruction. For ĥ, raise the back of the tongue toward the soft palate but leave a narrow channel for continuous friction. If you make a complete closure, you have produced k, not ĥ.
Hodiaŭ ni havas liberan horon post la tagmanĝo.
Today we have a free hour after lunch.
All three h sounds remain audible. In hodiaŭ, count the true vowels o-i-a: ŭ is not a vowel, so stress falls on i, giving ho-DI-aŭ. In horo, there are two vowels, so stress falls on the first: HO-ro.
La ĥoro ekzercas sin en la halo ĉiun merkredon.
The choir rehearses in the hall every Wednesday.
The first consonant of ĥoro is made at the soft palate; the first consonant of halo is made at the glottis. Both words have two syllables and initial stress.
A meaning-bearing contrast
The clearest minimal pair is horo “hour” versus ĥoro “choir.” Replacing one consonant with the other changes the word.
La ĥoro ekzercis sin dum unu horo.
The choir rehearsed for one hour.
Say the first word with back-of-the-mouth friction and the last with a breathy glottal beginning. The vowels and stress are otherwise the same. That makes this an efficient listening drill.
Ĉu vi diris ‘horo’ aŭ ‘ĥoro’?
Did you say ‘hour’ or ‘choir’?
If the listener asks this question, repeating the whole sentence louder is less useful than isolating the place contrast: h at the glottis, ĥ at the velum.
Why Ĥ is rare
Ĥ is a foundational letter and words containing it are valid Esperanto. At the same time, it is the language's rarest consonant, and alternative roots have existed since the early community. Many words have a widely used k form: ĥemio / kemio, ĥaoso / kaoso, teĥniko / tekniko. Where simple replacement would collide with another word, the alternative may be reshaped: ĥoro / koruso, because koro already means “heart.”
This is lexical variation, not a license to pronounce any chosen ĥ as k. If you say or read ĥoro, pronounce ĥ; if you choose koruso, pronounce the written k and the additional syllables. Modern attested usage strongly favors some k-forms, while other ĥ-words survive in particular texts, names, and compounds. A learner may prefer common alternatives in active speech but must still recognize ĥ.
La kurso pri kemio komenciĝos en Oktobro.
The chemistry course will begin in October.
Kemio is a normal modern alternative to ĥemio. It has three syllables, ke-MI-o, because every written vowel is pronounced.
La malnova libro uzas la formon ‘ĥemio’, sed nia lernolibro uzas ‘kemio’.
The old book uses the form ‘ĥemio,’ but our textbook uses ‘kemio.’
Neither quotation is a casual mispronunciation of the other; they are two established written forms. Consistency within edited prose is usually clearest.
Syllables and stress stay regular
Neither consonant is a vowel, so neither can carry stress. Count a, e, i, o, u, then stress the penultimate vowel. Do not add an English-like neutral vowel before or after the fricative.
| Word | Vowels | Syllable guide | Stress |
|---|---|---|---|
| horo | o, o | ho-ro | HO-ro |
| hotelo | o, e, o | ho-te-lo | ho-TE-lo |
| historio | i, o, i, o | his-to-ri-o | his-to-RI-o |
| ĥoro | o, o | ĥo-ro | ĤO-ro |
| ĥaosa | a, o, a | ĥa-o-sa | ĥa-O-sa |
La hotelo havas trankvilan ĝardenon malantaŭ la halo.
The hotel has a quiet garden behind the hall.
Keep the unstressed o of hotelo and the final o fully audible. English speakers often weaken an unstressed vowel to “uh,” but Esperanto's five vowel identities remain stable.
La situacio estis ĥaosa, sed neniu vundiĝis.
The situation was chaotic, but nobody was injured.
In ĥaosa, the adjacent a-o are two vowels and therefore two syllabic nuclei. Stress o, the penultimate vowel; do not turn the sequence into one English-style glide.
Careful and connected speech
In careful international speech, keep both consonants distinct. In fast conversation, h may become lighter because it has little oral obstruction, and different first-language accents may make ĥ more fronted, more back, or nearly k. Such variation is understandable when it does not erase another contrast, but the pedagogical target remains [h] versus .
Do not drop h merely because English sometimes has silent h, and do not assume every native accent realizes ĥ identically. International intelligibility depends more on preserving a recognizable difference and the surrounding vowels than on imitating one national accent.
— Ĉu vi havas tempon hodiaŭ? — Jes, mi estos hejme post la sesa.
— Do you have time today? — Yes, I will be home after six.
In this connected exchange, havas, hodiaŭ, hejme all begin with an audible h. It may be light, but it is never an English-style silent letter.
Common Mistakes
1. Dropping h as though it were silent English h
❌ Mi loĝas en otelo apud la stacio.
Incorrect: dropping h changes hotelo into a misspelled and mispronounced form.
✅ Mi loĝas en hotelo apud la stacio.
I live in a hotel near the station.
2. Replacing a written ĥ with h
❌ La horo kantas bele.
Incorrect for ‘the choir sings beautifully’: horo means ‘hour.’
✅ La ĥoro kantas bele.
The choir sings beautifully.
3. Moving stress toward an English-looking syllable
❌ Mi studas historion kun la akcento sur ‘his’.
Incorrect pronunciation note: historio is not stressed on its first syllable.
✅ Mi studas historion; la akcento estas sur ‘ri’.
I study history; the stress is on ‘ri.’
4. Reducing an unstressed vowel after h
❌ La lasta o de ‘hotelo’ malaperas en la elparolo.
Incorrect: Esperanto does not normally delete or neutralize that written vowel.
✅ En ‘hotelo’ oni klare aŭdas o, e kaj o.
In ‘hotelo,’ one clearly hears o, e, and o.
Key Takeaways
H is glottal [h]; ĥ is velar . Both are voiceless fricatives, but their location—not their force—distinguishes them. Ĥ is rare and many roots have established alternatives, yet a written ĥ still calls for its own sound. Count vowels for syllables and stress, keep all vowels full, and protect the contrast most clearly in pairs such as horo / ĥoro.
Related Topics
- Consonant Inventory and VoicingA2 — A practical map of Esperanto’s consonants, their voiced and voiceless contrasts, and acceptable variation in connected speech.
- Syllables and Penultimate StressA2 — How to count Esperanto syllables, place word stress on the penultimate vowel, and preserve clear vowels in connected speech.
- Reading New Words AloudB1 — A repeatable procedure for turning any unfamiliar Esperanto spelling into clear, correctly stressed speech.
- The Six Diacritic LettersA1 — Master ĉ, ĝ, ĥ, ĵ, ŝ, and ŭ as six independent Esperanto letters with distinct sounds and spelling roles.
- One Letter, One SoundA1 — Understand Esperanto’s regular sound–spelling relationship without confusing a stable phoneme with mechanically identical pronunciation.