"The correct answer is Option 3) Key Points The word ephemeral means something that lasts for a very short period. (अल्पकालिक) Example: The joy of winning the game was ephemeral, as the team soon faced another challenge. Permanent refers to something that lasts for a very long time or forever; it is the opposite of ephemeral. (स्थायी) Example: They decided to make a permanent move to the countryside. Hence, we can infer that the opposite of 'ephemeral' is 'permanent'. Additional Information Here are the other options explained along with their Hindi meanings and example sentences: Uniform (समरूप): Consistent; unvarying. Example: The soldiers wore a uniform dress code. Unwavering (अटल): Steady or resolute; not wavering. Example: She showed unwavering support for her friend. Transient (क्षणिक): Lasting for only a short time; impermanent. Example: The transient nature of the job made it less appealing."

The ephemeral refers to the fleeting, the evanescent.

The eternal refers to the unchanging, to that which remains the same forever.

When yoked as modifiers of the same thing, the intention is paradox.

Specifically with regard to Las Vegas, a gambling "mecca", with lights that flash and go out, entertainment acts by stars who will fade into obscurity, a sea of changing faces, people who bring money and leave without it, or rarely the opposite, there's plenty that is ephemeral; what is eternal is the fact that it is ever-changing, that it is constantly in flux, that there is an endless throng of people visiting the place.

"The correct answer is: Option 3, i.e., Eternal. Key Points The word ephemeral means something that lasts for a very short time or is fleeting. (क्षणभंगुर) Example: The joy of the festival was ephemeral, fading as soon as the celebrations ended. The word eternal refers to something that is everlasting, permanent, or timeless. It is the opposite of ephemeral, which denotes brevity. (शाश्वत) Example: The love of a mother for her child is often considered eternal. Hence, we can infer that the antonym of 'ephemeral' is 'eternal'. Therefore, the correct answer is: Option 3, i.e., Eternal. Additional Information Here are the other options explained along with their Hindi meanings and example sentences: Fleeting (क्षणिक): Something that passes swiftly or is very short-lived. Example: His fleeting visit to the city left no time to catch up with old friends. Short-lived (अल्पकालिक): Something that exists for only a short period of time. Example: Their excitement over the new gadget was short-lived when it broke down in a week. Transient (क्षणिक): Something that is temporary and not lasting for a long time. Example: As a transient worker, she moved frequently from one city to another."

I'm thinking it's ineffable - which is something that can't be defined.