Learning a new language is a rewarding yet challenging journey. For non-native English speakers, one of the biggest hurdles is pronunciation. English pronunciation is often unpredictable, filled with silent letters, inconsistent rules, and sounds that may not exist in a learner’s native language. Some words are infamous for causing tongue-twisting struggles, even for advanced learners.
In this article, we’ll explore why certain English words are difficult to pronounce and highlight some of the most troublesome ones for non-native speakers. Whether you’re a language learner yourself or simply curious, you’ll find it interesting how tricky English can be!

Why Are Some English Words Hard to Pronounce?
Before we dive into specific words, it’s important to understand the reasons why some English words are more difficult to pronounce than others:
- Inconsistent Spelling and Pronunciation
English spelling does not always match how a word is pronounced. For example, the combination of “ough” can be pronounced in several ways (though, through, cough, rough). - Unfamiliar Sounds
Many sounds in English do not exist in other languages. For example, the “th” sound (as in “think” or “this”) is not present in many languages, making it difficult for learners. - Consonant Clusters
Words with multiple consonants together (like “strengths”) can be hard to articulate for non-native speakers whose languages don’t have such clusters. - Silent Letters
Letters that are written but not pronounced (like the “k” in “knight” or the “b” in “doubt”) add confusion. - Stress and Intonation
Incorrect stress on syllables can make words sound wrong, even if each letter is pronounced correctly.

Commonly Difficult Words to Pronounce
Now, let’s look at some specific words that are notorious for being difficult for non-native speakers. This list includes words from various pronunciation challenges.
1. Rural
The double “r” sound in “rural” makes it difficult to pronounce smoothly. The tongue has to roll from one “r” to another with a vowel in between, which can feel awkward.
2. Colonel
This word is pronounced as “kernel,” which doesn’t match its spelling at all. The silent “l” and the unusual pronunciation confuse many learners.
3. Worcestershire
This place name is often mispronounced as it looks like it should be said “WOR-ces-ter-shyre,” but is actually pronounced “WUSS-ter-sheer” (or even just “WUSS-ter” in British English).
4. Anemone
Pronounced as “uh-NEM-uh-nee,” this word trips people up due to its unusual letter combination and rhythm.

5. Sixth
This word involves a difficult consonant cluster at the end, moving from “s” to “k” to “th” sounds rapidly.
6. Isthmus
Another tricky one with a cluster of consonants. Many people struggle with the “sth” sequence in the middle of the word.
7. February
Many native speakers even skip the first “r” sound and say “Feb-u-ary,” but technically, it’s pronounced “Feb-ru-ary,” making it hard for learners.
8. Phenomenon
This word challenges learners with its rhythm and unusual combination of syllables: “fi-NOM-uh-non.”
9. Squirrel
The combination of “squ” and “rl” sounds is hard for speakers of languages that don’t have similar blends. German and Japanese speakers, in particular, find this word difficult.
10. Mischievous
Often mispronounced as “mis-CHEE-vee-us,” but the correct pronunciation is “MIS-chuh-vus.” The extra syllable people add is a common error.

11. Quinoa
Borrowed from Spanish and indigenous South American languages, “quinoa” is correctly pronounced “KEEN-wah,” which surprises many learners.
12. Choir
Despite being spelled “choir,” it is pronounced “quire.” The “o” is completely silent, and the unusual vowel sound makes it a common mistake.
13. Entrepreneur
Borrowed from French, this word has a nasal vowel and a tricky ending. Non-native speakers struggle with the flowing rhythm and correct stress pattern.
14. Schedule
Depending on whether you use British (“SHED-jool”) or American (“SKED-jool”) pronunciation, this word can be confusing.
15. Aisle
The “s” is silent, and the word is pronounced “I’ll.” This surprises many learners who would expect a sound closer to the spelling.

Words with the Infamous “TH” Sound
The “th” sound is particularly challenging because it doesn’t exist in many languages. Words like:
- Think
- This
- Thorough
- Theater
…require the tongue to press lightly between the teeth, a motion that’s unfamiliar for many learners.
Regional Differences Make It Worse
To make things even more complex, pronunciation can vary based on accents and regions. British English, American English, Australian English, and other varieties sometimes pronounce the same word differently. For example:
- Aluminium (British) vs. Aluminum (American)
- Herb (with silent ‘h’ in American English, but pronounced ‘h’ in British English)
These variations can confuse learners who are trying to master a “correct” version.

Tips for Improving Pronunciation
While these words can be frustrating, there are ways to improve pronunciation:
- Listen and Imitate
Listening to native speakers, especially through songs, podcasts, and movies, helps you hear the correct sounds. - Practice Phonetics
Learning the International Phonetic Alphabet (IPA) can help understand how words are supposed to sound. - Record Yourself
Hearing yourself speak can help you notice mistakes and track improvement over time. - Use Tongue Twisters
Practicing tongue twisters is a fun way to improve your control over tricky sounds. - Slow Down
Speaking slowly and clearly can help build muscle memory for difficult words.

Final Thoughts
English pronunciation is notoriously irregular, and every non-native speaker struggles with certain words. However, with consistent practice and exposure, these words become easier over time. It’s important to remember that making mistakes is part of learning, and even native speakers stumble over words occasionally.
The key is to stay patient, have fun with the process, and celebrate small victories. After all, every difficult word mastered is a step closer to fluency.