Subtle(adjective)
Good at noticing and understanding things.
Hindi meaning:कुशाग्र-बुद्धि
Synonyms: Shrewd, Astute, Keen, Sagacious, Perceptive, Discerning
Antonyms: Stupid, Idiotic, Dumb, Foolish
Example: The job required a subtle mind which he was lacking.
Trick to remember: Sab inventions dekhne ke bad scientists ne subtle change kiya









