Most English words that start with the letter H actually pronounce that H as a real /h/ sound: house, happy, home, help. But a tiny group of high-frequency words break the rule: they begin with H in writing, yet the H is completely silent in speech. This guide shows you which words are silent-H words, why, and why the article before them is always an (never a).
The Core Rule
When a word was borrowed from French and still keeps the French habit of not pronouncing H, the English H stays silent. The first sound of the word is then a vowel, which is why we use an before it.
The Main Silent-H Words
There are only a handful. Memorise the family and you have the whole rule:
- hour /aʊr/ and its family: hourly, hourglass
- honor / honour /ˈɑːnɚ/ and its family: honorable, honorary, honored
- honest /ˈɑːnəst/ and its family: honesty, honestly, dishonest
- heir /ɛr/ and its family: heiress, heirloom
- herb /ɚb/ (American English only; British keeps /h/) and: herbal, herbaceous, herbicide
Why "An Hour" and Not "A Hour"
The article rule is based on sound, not spelling. If the first sound you hear is a vowel, use an. Since the H is silent in these words, the first real sound is a vowel:
- an hour (not a hour)
- an honest mistake
- an honor
- an heir
- an herb garden (US)
Practice Words
Common Exceptions and Tricky Pairs
- human, humid, humble, humor: H is pronounced. Say "a human", "a humid day".
- herb: silent H in American English (an herb), pronounced H in British English (a herb).
- historic / historical: H is pronounced in modern US English; older British style sometimes allowed "an historic", but "a historic" is now standard.
- hotel: H is pronounced today; "an hotel" is old-fashioned.
Quick Reference Table
| Spelling | First sound | Article | Example |
|---|---|---|---|
| hour | /aʊ/ | an | an hour ago |
| honor | /ɑː/ | an | an honor to meet you |
| honest | /ɑː/ | an | an honest answer |
| heir | /ɛ/ | an | an heir to the fortune |
| herb (US) | /ɚ/ | an | an herb garden |
| human | /h/ | a | a human right |
| house | /h/ | a | a house in town |
| historic | /h/ | a | a historic moment |
A Simple Memory Trick
Memorise five silent-H words: hour, honor, honest, heir, herb. Everything built on these roots keeps the silent H (hourly, honesty, heiress, herbal). Every other word with H pronounces it.
Why This Matters for Speaking
Saying "a hour" or "a honest man" sounds awkward to native ears and often breaks listening flow. Getting the article right (an) plus the smooth vowel onset is one of the fastest ways to make your English sound more natural.
Summary
Five main words (and their families) have a silent H: hour, honor, honest, heir, herb. The first spoken sound is a vowel, so use an. Everything else starting with H uses the regular /h/ sound and takes a.