(of a person) Angry, distressed, or unhappy. / (of a stomach or gastrointestinal tract, referred to as stomach) Feeling unwell, nauseated, or ready to vomit.

(uncountable) Disturbance or disruption. / (countable, sports, politics) An unexpected victory of a competitor or candidate that was not favored to win. / (automobile insurance) An overturn.

(transitive) To make (a person) angry, distressed, or unhappy. / (transitive) To disturb, disrupt or adversely alter (something). / (transitive) To tip or overturn (something).

present participle of upset

The action of the verb upset.

Causing upset; distressing. / (Scotland) Conceited; presumptuous.

plural of upset

Third-person singular simple present indicative form of upset

plural of upsetting

The quality or degree of being emotionally upset.