sharp (knife, claws, etc.); pointed

sharp (pain, tone, etc.); acute; stabbing; cutting (remark, criticism, etc.); stinging; biting; fierce (attack); pointed (question, look, etc.); piercing (gaze); shrill (sound)

keen (intuition, sense of smell, etc.); acute; sharp (eye, mind, etc.); astute; shrewd; discerning; penetrating (insight, question, etc.); perceptive

elite; best; pick; cream of the crop

sharp; keen; acute

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

sharp-witted; shrewd; clever; astute; acute

state-of-the-art; cutting-edge

Military

elite unit; elite troop

Adjectival nouns or quasi-adjectives (keiyodoshi)

sharpness

sharp weapon; blade

fine soldier

acute angle