Expanding your vocabulary with advanced words sharpens communication and boosts confidence. This post features ten difficult English words, their meanings, example sentences, and a fun quiz to test your recall—all curated for effective learning.
The Word List
Start with these sophisticated terms and their core definitions:
- Obfuscate – To make something unclear or difficult to understand.
- Pernicious – Having a harmful effect, especially in a subtle or gradual way.
- Sesquipedalian – Characterized by long words; long-winded.
- Esoteric – Intended for or likely to be understood by only a small number of people with specialized knowledge.
- Ubiquitous – Present, appearing, or found everywhere at the same time.
- Vicissitude – A change of circumstances or fortune, typically one that is unpleasant.
- Quixotic – Extremely idealistic, unrealistic, and impractical.
- Obsequious – Excessively eager to please or obey someone; submissive.
- Lugubrious – Looking or sounding sad and dismal.
- Intransigent – Unwilling or refusing to change one’s views or to agree about something.
Example Sentences
Seeing words in action cements understanding. Here are clear examples for each:
- The teacher warned us not to obfuscate our answers with unnecessary details.
- Smoking has a pernicious effect on a person’s health over time.
- His sesquipedalian speech confused the audience more than it impressed them.
- The professor’s esoteric lecture was understood only by a few advanced students.
- Smartphones are so ubiquitous today that even children know how to use them.
- She stayed calm despite the vicissitudes of life and its many ups and downs.
- His quixotic dream of changing the world in one year was inspiring but unrealistic.
- The obsequious assistant agreed with every opinion his boss expressed.
- After hearing the bad news, he walked around with a lugubrious expression all day.
- The manager remained intransigent and refused to change the company’s strict policy.
Interactive Quiz
Apply what you’ve learned! Match each sentence to the correct word from the list above. Answers follow—test yourself first.
- The lawyer tried to __ the facts with complicated jargon during the trial.
- Social media rumors can have a __ influence on young minds.
- Her __ writing style used words so long they were hard to pronounce.
- Ancient alchemy knowledge remains __ to most historians today.
- Plastic bags have become __ in supermarkets worldwide.
- The explorer endured many __ during his journey through the wilderness.
- Don Quixote’s __ pursuit of giants was noble but foolish.
- The __ waiter bowed excessively to every customer.
- The dog’s __ eyes after losing his owner melted everyone’s hearts.
- Negotiators found the union leader __ on salary demands.
Answers: 1. Obfuscate, 2. Pernicious, 3. Sesquipedalian, 4. Esoteric, 5. Ubiquitous, 6. Vicissitude, 7. Quixotic, 8. Obsequious, 9. Lugubrious, 10. Intransigent.
Practice regularly to make these words second nature. Share your quiz score in the comments!
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