EXCRUCIATING
agonizing, agonising, excruciating, harrowing, torturing, torturous, torturesome
(adjective) extremely painful
Source: WordNet® 3.1
Etymology
Adjective
excruciating (comparative more excruciating, superlative most excruciating)
Causing great pain or anguish, agonizing
Exceedingly intense; extreme
Source: Wiktionary
Ex*cru"ci*a`ting
Definition: . Torturing; racking. "Excruciating pain." V. Knox.
"Excruciating fears." Bentley -- Ex*cru"ci*a`ting*ly, adv.
EXCRUCIATE
Ex*cru"ci*ate, a. Etym: [L. excruciatus, p. p. of excruciare to
excruciate; ex out + cruciare to put to death on a cross, to torment.
See Cruciate, Cross.]
Definition: Excruciated; tortured.
And here my heart long time excruciate. Chapman.
Ex*cru"ci*ate, v. t. [imp. & p. p. Excruciated; p. pr. & vb. n.
Excruciating.]
Definition: To inflict agonizing pain upon; to torture; to torment greatly;
to rack; as, to excruciate the heart or the body.
Their thoughts, like devils, them excruciate. Drayton.
Source: Webster’s Unabridged Dictionary 1913 Edition