excruciate
Concise Oxford English Dictionary © 2008 Oxford University Press:
excruciate /ɪkˈskruːʃɪeɪt, ɛk-/
▶verb rare torment physically or mentally.
– derivatives
excruciation noun.
excruciation noun.
– origin C16: from L. excruciat-, excruciare ‘torment’ (based on crux, cruc- ‘a cross’).
'excruciate' also found in these Oxford entries:

