upset

Universal Words verb, adjective, noun verb (upsetting, upset, upset) 1 to make sb/yourself feel unhappy, anxious or annoyed SYNDISTRESS: [VN] This decision is likely to upset a lot of people. * Try not to let him upset you. * Don't upset yourself about it-let's just forget it ever happened. * [VNthat] It upset him that nobody had bothered to tell him about it. * [VNtoinf] It upsets me to think of her all alone in that big house. 2 [VN] to make a plan, situation, etc. go wrong: He arrived an hour late and upset all our arrangements. 3 [VN] ~ sb's stomach to make sb feel sick after they have eaten or drunk sth 4 [VN] to make sth fall over by hitting it accidentally: She stood up suddenly, upsetting a glass of wine. IDIOMS upset the apple cart to cause problems for sb or spoil their plans, arrangements, etc. adjective 1 [notbeforenoun] ~ (about sth)