- sharp (knife, claws, etc.)adj-i
- sharp (pain, tone, etc.)adj-i
- acute
- stabbing
- cutting (remark, criticism, etc.)
- stinging
- biting
- fierce (attack)
- pointed (question, look, etc.)
- piercing (gaze)
- shrill (sound)
- keen (intuition, sense of smell, etc.)adj-i
- acute
- sharp (eye, mind, etc.)
- astute
- shrewd
- discerning
- penetrating (insight, question, etc.)
- perceptive