used of an unexpected defeat of a team favored to win; "the Bills' upset victory over the Houston Oilers"
thrown into a state of disarray or confusion;
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"
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"
mildly physically distressed; "an upset stomach"
disturb the balance or stability of; "The hostile talks upset the peaceful relations between the two countries"
an improbable and unexpected victory; "the biggest upset since David beat Goliath"
defeat suddenly and unexpectedly; "The foreign team upset the local team"