WordNet

used of an unexpected defeat of a team favored to win; "the Bills upset victory over the Houston Oilers"
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" (同)derangement, overthrow
the act of upsetting something; "he was badly bruised by the upset of his sled at a high speed" (同)overturn, turnover
a tool used to thicken or spread metal (the end of a bar or a rivet etc.) by forging or hammering or swaging (同)swage
cause to lose ones composure (同)discompose, untune, disconcert, discomfit
defeat suddenly and unexpectedly; "The foreign team upset the local team"
disturb the balance or stability of; "The hostile talks upset the peaceful relations between the two countries"
mildly physically distressed; "an upset stomach"

PrepTutorEJDIC

『…‘を'ひっくり返す』,転覆させる / 〈計画など〉‘を'『だめにする』,だいなしにする,狂わす / 〈人〉‘の'『心お乱す』,'を'ろうばいさせる / 〈体など〉‘の'調子お狂わせる / 《米》(競技などで)〈相手〉'を'思いがけなく負かす / ひっくり返った / (計画などが)だいなしの,狂った / 《捕語にのみ用いて》(精神的に)混乱した,ろうばいした / (体などの)調子がおかしくなった / 〈U〉〈C〉『転倒』,転落 / 〈C〉(計画.心などの)『混乱』,乱れ;(体の)不調 / 〈C〉《話》けんか / 〈C〉《米》(競技などでの)番狂わせ