Learning difficult or advanced words and adding them to your vocabulary will help your English language proficiency and help you improve your IELTS test scores.
This updated guide shares 50 difficult English words with meanings, synonyms, and example sentences. We have also included pronunciation tips, hard words to spell, and practical advice for IELTS learners.
In this guide
50 difficult English words with meaning and examples
Hard English words to pronounce
Hard English words to spell
Useful difficult words for IELTS
Tips to learn vocabulary faster for IELTS
What makes a word "difficult" in English? And how do you use difficult words?
What makes certain words difficult? In many cases, it comes down to familiarity. Words we often hear, read, or use in daily life usually feel easier because we recognise and understand them faster. Words we rarely come across can feel more difficult because they are less familiar.
Rare words can feel harder
For example, common words used in everyday conversations, news, or online content are often easier to remember. Less common words, such as verisimilitude or consanguineous, may feel harder because most people do not see or hear them regularly.
Difficulty is not only about meaning
Some words are challenging because they are long, hard to spell, unusual to pronounce, or have meanings that depend on context. A word can also feel easier when it is useful to your own life, studies, or work.
The best way to learn difficult words is to use them
Read them in context, practise them in sentences, and repeat them over time. Once a word becomes familiar, it often stops feeling difficult.
Below, you’ll find 50 difficult English words with meanings, synonyms, and examples to help you start using them with confidence.
50 difficult English words with meaning, synonyms and examples
Word | Meaning | Synonym | Example sentence |
|---|---|---|---|
Abrogate | to officially end or cancel a law or agreement | abolish | The government decided to abrogate the outdated policy. |
Anachronism | something out of its proper time period | mismatch | The old phone booth looked like an anachronism. |
Arrant | complete or total, often negative | utter | His claim was arrant nonsense. |
Artless | natural and without pretence | sincere | She gave an artless and honest reply. |
Asperity | harshness in tone or manner | severity | His voice carried an asperity that upset the team. |
Belie | to give a false impression of something | disguise | Her calm smile belied her stress. |
Byzantine | overly complex or complicated | intricate | The visa process seemed byzantine at first. |
Cajole | to persuade with flattery | coax | He tried to cajole his friend into joining. |
Conciliate | to calm or win over | appease | Leaders met to conciliate both sides. |
Connecticutian | a person from Connecticut | resident | The Connecticutian proudly spoke about the state. |
Consanguineous | related by blood | familial | The study focused on consanguineous families. |
Demagogue | a leader who gains support through emotion and fear | agitator | History warns against the rise of a demagogue. |
Diatribe | a forceful verbal attack | rant | He launched into a diatribe online. |
Dilatory | slow or causing delay | delaying | Their dilatory response frustrated everyone. |
Embourgeoisement | becoming middle-class in values or lifestyle | social rise | The area changed through embourgeoisement. |
Equivocate | to avoid speaking clearly | evade | The witness tried to equivocate. |
Fatuous | foolish and pointless | silly | It was a fatuous comment. |
Gaffe | an embarrassing mistake | blunder | The politician made a public gaffe. |
Garrulous | talking too much | chatty | My garrulous neighbour loves long stories. |
Hoi Polloi | ordinary people or the general public | masses | The event welcomed the hoi polloi. |
Hubris | excessive pride or confidence | arrogance | His hubris led to failure. |
Iconoclast | someone who challenges traditions | rebel | She became an iconoclast in the industry. |
Impedimenta | equipment or baggage that slows movement | burden | We carried too much impedimenta on the trip. |
Inchoate | not fully formed or developed | undeveloped | He had an inchoate idea for a business. |
Indefatigable | tireless and persistent | relentless | She was indefatigable in her studies. |
Inundate | to flood or overwhelm | swamp | The office was inundated with emails. |
Invective | insulting or abusive language | abuse | The debate was full of invective. |
Jackasseries | foolish behaviour | stupidity | The manager had no patience for jackasseries. |
Martinet | a strict disciplinarian | authoritarian | The coach was known as a martinet. |
Myrmecophilous | attracted to or associated with ants | ant-loving | Some insects are myrmecophilous by nature. |
Nonplussed | surprised and confused | bewildered | I was nonplussed by the sudden change. |
Omphaloskepsis | deep thought while staring at one's navel | self-absorption | Endless omphaloskepsis solves little. |
Panache | stylish confidence | flair | She entered the room with panache. |
Pillory | to publicly criticise harshly | condemn | The article tried to pillory the company. |
Polyphiloprogenitive | producing many children | prolific | Rabbits are famously polyphiloprogenitive. |
Psychotomimetic | causing effects similar to psychosis | hallucinogenic | Researchers studied a psychotomimetic substance. |
Puissant | powerful or influential | mighty | He became a puissant business leader. |
Pulchritudinous | physically beautiful | attractive | The garden was pulchritudinous in spring. |
Quattuordecillion | the number 10 to the power of 45 | huge number | The chances felt one in a quattuordecillion. |
Quisling | a traitor who helps an enemy | collaborator | He was branded a quisling. |
Surreptitious | secretive and hidden | stealthy | She took a surreptitious glance at her phone. |
Sybarite | a person who loves luxury | hedonist | The sybarite booked the finest suite. |
Tergiversation | changing sides or avoiding clear action | evasion | Voters disliked his tergiversation. |
Trichotillomania | a condition involving repeated hair pulling | disorder | She sought help for trichotillomania. |
Truculent | aggressively defiant | hostile | The customer became truculent. |
Unabashed | not embarrassed or ashamed | unashamed | He was unabashed about his ambition. |
Uncanny | strange in a surprising way | eerie | She had an uncanny memory. |
Untoward | unexpected or inconvenient | adverse | There were no untoward incidents. |
Vicissitude | a change in fortune or circumstance | fluctuation | Life is full of vicissitudes. |
Xenotransplantation | transplanting organs between species | cross-species transplant | Scientists continue to study xenotransplantation. |
Do difficult words improve your IELTS score?
Not automatically. IELTS rewards vocabulary that is accurate, natural, and appropriate for the topic.
Using one useful advanced word correctly is better than forcing three uncommon words into a sentence. Focus on words you understand and can use with confidence.
Hard English words to pronounce
Some English words are difficult because spelling and sound do not always match.
Word | Simple pronunciation guide |
|---|---|
Worcestershire | WUSS-ter-sheer |
Colonel | KER-nel |
Rural | ROO-rul |
Sixth | siksth |
Anemone | uh-NEM-uh-nee |
Onomatopoeia | on-uh-mat-uh-PEE-uh |
IELTS tip
Clear pronunciation matters more than using difficult words in Speaking. Choose words you can say confidently.
Hard English words to spell
Some words are difficult because of silent letters, double consonants, or unusual letter patterns.
Word | Common mistake |
|---|---|
Accommodation | accomodation |
Necessary | neccessary |
Rhythm | rythm |
Separate | seperate |
Conscience | concience |
Occasion | ocassion |
IELTS tip
Spelling errors can affect clarity in Writing and Listening answers. Review commonly misspelt words regularly.
Difficult English words from Moira Rose on the TV series Schitt's Creek
Since we’re on the topic of hard English words, it’s worth mentioning the epitome of difficult vocabulary. It’s none other than: Moira Rose (Catherine O'Hara) from the TV series Schitt's Creek.
Here’s a guide to the Moira Rose terminology on Schitt’s Creek.
Moira Rose's Difficult Word | Synonym or Meaning |
|---|---|
Balatron | A buffoon; one who speaks a lot of nonsense and is characterized by self-indulgence |
Bedevil | Cause great and continual trouble to something |
Blouson | A garment (such as a dress) having a close waistband with blousing of material over it |
Bombilate | Buzz |
Bolus | A pill or drug |
Callipygian | Shapely buttocks |
Chanteuse | A woman who is an accomplished nightclub singer |
Chin-wag | To have a friendly conversation |
Churlish | Lacking civility or graciousness |
Confabulate | To hold an informal discussion |
Dangersome | Dangerous |
Dewdropper | A slacker |
Encumber | To weigh down or burden |
Epistle | A formal or elegant letter |
Frippet | A frivolous or showy young woman |
Inamorata | A woman with whom one is in love or has intimate relations |
Habilimented | Clothed |
Irksome | Annoying or tedious |
Juvenescence | The state of being youthful |
Mise en scène | The setting or surroundings |
Oxidise | To dehydrogenate especially by the action of oxygen |
Pablum | Bland, intellectual sustenance |
Peccadillos | A slight offence |
Pettifogging | Arguing over trivial things |
Prestidigitator | A sleight-of-hand artist |
Sephardic | Jewish or of Jewish descent |
Spanandry | The extreme scarcity of males |
Spittoon | A receptacle for spit |
Peregrination | A long and meandering journey |
How to learn difficult vocabulary faster for IELTS
Learn words by topic
Group words into themes like education, environment, or health. This helps memory and Writing Task 2 ideas.
Use your own sentences
Write one sentence about your life or opinion using each word.
Review little and often
Ten minutes daily can be more effective than one long weekly session.
Focus on usable words
Choose vocabulary you can understand, pronounce, and use naturally.
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Common mistakes IELTS learners make with difficult English words
Memorising rare words only
Rare words do not guarantee a higher band score.
Using words in the wrong context
Always learn the meaning and usage together.
Ignoring pronunciation
If you can’t say a word clearly, avoid forcing it when speaking.
Forgetting spelling
Strong vocabulary still needs accurate spelling in Writing and Listening.
Useful difficult English words for IELTS topics
Education | Environment | Technology | Society | Health |
|---|---|---|---|---|
allocate, implement, compulsory, flexible, substantial, curriculum, assessment, literacy | sustainable, deteriorate, consequence, scarce, viable, conserve, pollution, renewable | innovative, efficient, influence, rapid, transform, automation, digitalise, advancement | disparity, awareness, ethical, regulation, inequality, diversity, welfare, policy | deficiency, resilient, adequate, prevalent, wellbeing, nutrition, recovery, prevention |
Can I use difficult English words in IELTS Writing and Speaking?
Yes, you can use difficult English words in the IELTS test, but only when they sound natural and fit the context.
In IELTS Speaking, use clear and natural language. The test is a real conversation.
For example, you don’t usually say “furthermore” or “moreover” in everyday speech. You would also probably not use “consanguineous” to describe your relatives when talking with friends or colleagues. At the same time, you should also avoid overly informal language, such as slang.
In IELTS Writing, advanced vocabulary can help your score if it is accurate and appropriate. This means using difficult words in English correctly, with the right meaning and tone.
The best approach is to use vocabulary words you know well. A smaller range of words used naturally is better than complex words used incorrectly.
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