Meanings:
noun
Definition: Disturbance or disruption.
Example: My late arrival caused the professor considerable upset.
Definition: An unexpected victory of a competitor or candidate that was not favored to win.
Definition: (automobile insurance) An overturn.
Example: “collision and upset”: impact with another object or an overturn for whatever reason.
Definition: An upset stomach.
Definition: An upper set; a subset (X,≤) of a partially ordered set with the property that, if x is in U and x≤y, then y is in U.
Definition: The dangerous situation where the flight attitude or airspeed of an aircraft is outside the designed bounds of operation, possibly resulting in loss of control.
verb
Definition: To make (a person) angry, distressed, or unhappy.
Example: I’m sure the bad news will upset him, but he needs to know.
Definition: To disturb, disrupt or adversely alter (something).
Example: Introducing a foreign species can upset the ecological balance.
Definition: To tip or overturn (something).
Definition: To defeat unexpectedly.
Example: Truman upset Dewey in the 1948 US presidential election.
Definition: To be upset or knocked over.
Example: The carriage upset when the horse bolted.
Definition: To set up; to put upright.
Definition: To thicken and shorten, as a heated piece of iron, by hammering on the end.
Definition: To shorten (a tire) in the process of resetting, originally by cutting it and hammering on the ends.
adjective
Definition: (of a person) Angry, distressed or unhappy.
Example: He was upset when she refused his friendship.
Definition: (of a stomach or gastrointestinal tract, referred to as stomach) Feeling unwell, nauseated, or ready to vomit.
Example: His stomach was upset, so he didn’t want to move.