lancinating

[From lancinate, to stab, from Latin lancināre, lancināt-, to lacerate.]

adjective

Marked by severity or intensity: acute, gnawing, knifelike, piercing, sharp, shooting, stabbing. See big/small/amount.

Pertaining to a stabbing pain (for example, the pain occurring in tic douloureux).

Characterized by a sensation of cutting, piercing, or stabbing.

The adjective has one meaning:

Meaning #1: as physically painful as if caused by a sharp instrument
  Synonyms: cutting, keen, knifelike, piercing, stabbing, lancinate