"upsetting" in the verb sense
disturb the balance or stability of
"The hostile talks upset the peaceful relations between the two countries"
2. upset, discompose, untune, disconcert, discomfit
cause to lose one's composure
3. disturb, upset, trouble
"This book upset me"
"A troubling thought"
4. overturn, tip over, turn over, upset, knock over, bowl over, tump over
cause to overturn from an upright or normal position
"The cat knocked over the flower vase"
"the clumsy customer turned over the vase"
"he tumped over his beer"
5. swage, upset
form metals with a swage
defeat suddenly and unexpectedly
"The foreign team upset the local team"
"upsetting" in the adjective sense
1. disconcerting, upsetting
causing an emotional disturbance
"his disconcerting habit of greeting friends ferociously and strangers charmingly"- Herb Caen
"an upsetting experience"
Source: WordNet® (An amazing lexical database of English)
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