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upset

1 upset /ˌʌpˈsɛt/ adjective
1 upset
/ˌʌpˈsɛt/
adjective
Britannica Dictionary definition of UPSET
[more upset; most upset]
: angry or unhappy
◊ If you have an upset stomach, you have an unpleasant feeling in your stomach because of illness or because of something you have eaten.
2 upset /ˌʌpˈsɛt/ verb
upsets; upset; upsetting
2 upset
/ˌʌpˈsɛt/
verb
upsets; upset; upsetting
Britannica Dictionary definition of UPSET
[+ object]
: to make (someone) unhappy, worried, etc.
: to cause an unpleasant feeling in (your stomach)
: to cause (something) to be unable to continue in the expected way
: to defeat (someone who was expected to defeat you)
: to cause (something) to fall

upset the apple cart

informal
: to do something that changes or spoils a plan, situation, system, etc.

— upsetting

adjective [more upsetting; most upsetting]
3 upset /ˈʌpˌsɛt/ noun
plural upsets
3 upset
/ˈʌpˌsɛt/
noun
plural upsets
Britannica Dictionary definition of UPSET
[count] : an occurrence in which a game, contest, etc., is won by a person or team that was expected to lose
: an unpleasant feeling of illness in your stomach
[noncount]
[count]
: a period of worry and unhappiness caused by something that has happened
[count]
[noncount]