a.
1.
Sharp, pointed, acuminate, cuspidate.
2.
Keen, shrewd, discerning, knowing, quick, sharp, smart, bright, sage, sagacious, intelligent, astute, ingenious, subtle, penetrating, piercing, clear-sighted, sharp-witted, long-headed.
3.
Severe, violent, intense, poignant, distressing, fierce, piercing, exquisite, pungent.
4.
High, shrill, high-toned.
5.
( Med. ) Sudden, violent, temporary, limited, not chronic.