鋭 - pointed, sharpness, edge

acute angle

state-of-the-art; cutting-edge

spirited; energetic

elite; best; pick; cream of the crop

sharp (knife, claws, etc.); pointed

sharp; keen; acute

young and energetic; up-and-coming; new and excellent; newly produced; up-and-comer

sharp (eyes, ears, etc.); keen; acute; sensitive

young and energetic; up-and-coming

sharp; clear

acuminate (i.e. sharp shape of leaf); apiculate

being young and spirited; being young and full of go