100 best words of English must learn for a serious IELTS student!

Ailurophile	A cat-lover.
Assemblage	A gathering.
Becoming	Attractive.
Beleaguer	To exhaust with attacks.
Brood	To think alone.
Bucolic	In a lovely rural setting.
Bungalow	A small, cozy cottage.
Chatoyant	Like a cat's eye.
Comely	Attractive.
Conflate	To blend together.
Cynosure	A focal point of admiration.
Dalliance	A brief love affair.
Demesne	Dominion, territory.
Demure	Shy and reserved.
Denouement	The resolution of a mystery.
Desuetude	Disuse.
Desultory	Slow, sluggish.
Diaphanous	Filmy.
Dissemble	Deceive.
Dulcet	Sweet, sugary.
Ebullience	Bubbling enthusiasm.
Effervescent	Bubbly.
Efflorescence	Flowering, blooming.
Elision	Dropping a sound or syllable in a word.
Elixir	A good potion.
Eloquence	Beauty and persuasion in speech.
Embrocation	Rubbing on a lotion.
Emollient	A softener.
Ephemeral	Short-lived.
Epiphany	A sudden revelation.
Erstwhile	At one time, for a time.
Ethereal	Gaseous, invisible but detectable.
Evanescent	Vanishing quickly, lasting a very short time.
Evocative	Suggestive.
Fetching	Pretty.
Felicity	Pleasantness.
Forbearance	Withholding response to provocation.
Fugacious	Fleeting.
Furtive	Shifty, sneaky.
Gambol	To skip or leap about joyfully.
Glamour	Beauty.
Gossamer	The finest piece of thread, a spider's silk
Halcyon	Happy, sunny, care-free.
Harbinger	Messenger with news of the future.
Imbrication	Overlapping and forming a regular pattern.
Imbroglio	An altercation or complicated situation.
Imbue	To infuse, instill.
Incipient	Beginning, in an early stage.
Ineffable	Unutterable, inexpressible.
Ingénue	A naïve young woman.
Inglenook	A cozy nook by the hearth.
Insouciance	Blithe nonchalance.
Inure	To become jaded.
Labyrinthine	Twisting and turning.
Lagniappe	A special kind of gift.
Lagoon	A small gulf or inlet.
Languor	Listlessness, inactivity.
Lassitude	Weariness, listlessness.
Leisure	Free time.
Lilt	To move musically or lively.
Lissome	Slender and graceful.
Lithe	Slender and flexible.
Love	Deep affection.
Mellifluous	Sweet sounding.
Moiety	One of two equal parts.
Mondegreen	A slip of the ear.
Murmurous	Murmuring.
Nemesis	An unconquerable archenemy.
Offing	The sea between the horizon and the offshore.
Onomatopoeia	A word that sounds like its meaning.
Opulent	Lush, luxuriant.
Palimpsest	A manuscript written over earlier ones.
Panacea	A solution for all problems
Panoply	A complete set.
Pastiche	An art work combining materials from various sources.
Penumbra	A half-shadow.
Petrichor	The smell of earth after rain.
Plethora	A large quantity.
Propinquity	An inclination.
Pyrrhic	Successful with heavy losses.
Quintessential	Most essential.
Ratatouille	A spicy French stew.
Ravel	To knit or unknit.
Redolent	Fragrant.
Riparian	By the bank of a stream.
Ripple	A very small wave.
Scintilla	A spark or very small thing.
Sempiternal	Eternal.
Seraglio	Rich, luxurious oriental palace or harem.
Serendipity	Finding something nice while looking for something else.
Summery	Light, delicate or warm and sunny.
Sumptuous	Lush, luxurious.
Surreptitious	Secretive, sneaky.
Susquehanna	A river in Pennsylvania.
Susurrous	Whispering, hissing.
Talisman	A good luck charm.
Tintinnabulation	Tinkling.
Umbrella	Protection from sun or rain.
Untoward	Unseemly, inappropriate.
Vestigial	In trace amounts.
Wafture	Waving.
Wherewithal	The means.
Woebegone	Sorrowful, downcast.