insistent
menacing
bleak
lithe
prestigious
hopeless; depressing
not giving up
highly respected
graceful; agile
Threatening
persistent
insistent: characterized by demanding or continuous urging or persistence.
Example: The teacher was insistent that all students submit their assignments on time.
menacing: suggesting the presence of danger or harm; threatening.
Example: The dark clouds and lightning gave the storm a menacing appearance.
bleak: (a) lacking vegetation and exposed to harsh conditions such as wind and cold; (b) offering little or no hope; depressing.
Example (a): The landscape in the tundra is usually bleak, with few trees or plants.
Example (b): After losing his job, John felt trapped in a bleak and uncertain future.
lithe: characterized by being thin, supple, and graceful.
Example: The ballet dancer moved across the stage with lithe movements.
prestigious: having a high reputation; honored; esteemed.
Example: Harvard University is considered one of the most prestigious educational institutions in the world.