upset

nouns

an unhappy and worried mental state
"there was too much anger and disturbance"; "she didn't realize the upset she caused me"
the act of disturbing the mind or body
"his carelessness could have caused an ecological upset"; "she was unprepared for this sudden overthrow of their normal way of living"
a physical condition in which there is a disturbance of normal functioning
"the doctor prescribed some medicine for the disorder"; "everyone gets stomach upsets from time to time"
a tool used to thicken or spread metal (the end of a bar or a rivet etc.) by forging or hammering or swaging
the act of upsetting something
"he was badly bruised by the upset of his sled at a high speed"
an improbable and unexpected victory
"the biggest upset since David beat Goliath"

verbs

disturb the balance or stability of
"The hostile talks upset the peaceful relations between the two countries"
is a type of (narrower)
tamper with
"Don't touch my CDs!"
cause to lose one's composure
move deeply
"This book upset me"; "A troubling thought"
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"
form metals with a swage
defeat suddenly and unexpectedly
"The foreign team upset the local team"
is derived from
is a type of (narrower)
win a victory over
"You must overcome all difficulties"; "defeat your enemies"; "He overcame his shyness"; "He overcame his infirmity"; "Her anger got the better of her and she blew up"

adjectives

afflicted with or marked by anxious uneasiness or trouble or grief
"too upset to say anything"; "spent many disquieted moments"; "distressed about her son's leaving home"; "lapsed into disturbed sleep"; "worried parents"; "a worried frown"; "one last worried check of the sleeping children"
thrown into a state of disarray or confusion
"troops fleeing in broken ranks"; "a confused mass of papers on the desk"; "the small disordered room"; "with everything so upset"
used of an unexpected defeat of a team favored to win
"the Bills' upset victory over the Houston Oilers"
is similar to
not expected or anticipated
"unexpected guests"; "unexpected news"
mildly physically distressed
"an upset stomach"
is similar to
affected by an impairment of normal physical or mental function
"ill from the monotony of his suffering"
having been turned so that the bottom is no longer the bottom
"an overturned car"; "the upset pitcher of milk"; "sat on an upturned bucket"