tormenting
Concise Oxford English Dictionary © 2008 Oxford University Press:
torment/ˈtɔːment/
▶noun severe physical or mental suffering.
■ a cause of torment.
▶verb- 1 subject to torment.
- 2 annoy or tease unkindly.
– derivatives
tormented adjective,
tormentedly adverb,
tormenting adjective,
tormentingly adverb,
tormentor noun.
tormented adjective,
tormentedly adverb,
tormenting adjective,
tormentingly adverb,
tormentor noun.
– origin ME: from OFr. torment (n.), tormenter (v.), from L. tormentum ‘instrument of torture’, from torquere ‘to twist’.
'tormenting' also found in these Oxford entries:

