Also Inflected form of upset
upsetting
up·set·ting
adjective
1.
causing an emotional disturbance
- “his disconcerting habit of greeting friends ferociously and strangers charmingly” Herb Caen
- “an upsetting experience”
WordNet 2.1 (Princeton University). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved.