As an advanced English speaker, expanding your vocabulary is essential to continue the fascinating journey of language mastery. Here, we introduce a selection of advanced English words that can help you express yourself with even greater sophistication and nuance.

Obfuscate
To deliberately make something unclear or difficult to understand.
The politician used technical jargon to obfuscate the main point of the argument.

Salient
Most noticeable or important; prominently standing out.
The salient features of the new policy were quickly criticized by the opposition.

Vituperate
To berate or criticize harshly and abusively.
The old man was known to vituperate against anyone who violated community guidelines.

Pulchritude
Beauty or physical appeal.
Renaissance paintings often celebrate the pulchritude of the human form.

Lugubrious
Looking or sounding sad and dismal; excessively mournful.
The lugubrious tone of the funeral march made everyone more somber.

Parsimonious
Extremely unwilling to spend money; stingy or frugal.
His parsimonious habits prevented him from participating in charitable events.

Insouciance
A casual lack of concern; indifference.
His insouciance in the face of danger was both admirable and terrifying.

Esoteric
Intended for or understood by only a small number of people with specialized knowledge or interest.
She published an esoteric article on the metaphysics of quantum mechanics.

Perfidy
Deceitfulness or dishonesty; untrustworthiness.
He was shocked when his closest aide was revealed to have committed an act of perfidy.

Supercilious
Behaving or looking as though one thinks they are superior to others.
Her supercilious attitude at the party made her few friends.

Sycophant
A person who acts obsequiously toward someone important in order to gain advantage; a servile flatterer.
The CEO was surrounded by sycophants who were only interested in advancing their careers.

Opulent
Rich and luxurious or lavish; wealthy.
They stayed at an opulent hotel with grandiose interiors and a stunning view.

Trenchant
Vigorous or incisive in expression or style; sharply perceptive.
Her trenchant critique of the film left no one in doubt of her opinions.

Panacea
A solution or remedy for all difficulties or diseases.
The new economic policy was believed by some to be a panacea for all the nation’s woes.

These advanced words, with regular practice and use in conversation and writing, can polish your command of English and exemplify your proficiency. Remember, the key to embedding these words in your vocabulary is to understand their meanings deeply and practice them in context. Keep learning and enjoy the journey of language discovery!