Upset may refer to:
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Upset (band), an American rock band
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Upset (competition), where a likely winner loses
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"Upset" (''Hit the Floor''), an episode of the television series ''Hit the Floor''
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Upset (horse), a racehorse
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Upset (wastewater treatment)
Secondary treatment is the removal of biodegradable organic matter (in solution or suspension) from sewage or similar kinds of wastewater. The aim is to achieve a certain degree of effluent quality in a sewage treatment plant suitable for the int ...
, temporarily decreased effluent quality
*
Aircraft upset, a dangerous aviation condition
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Upper set, in mathematics
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UpSet Plot
UpSet plots are a data visualization method for showing set data with more than three intersecting sets.
UpSet shows intersections in a matrix, with the rows of the matrix corresponding to the sets, and the columns to the intersections between t ...
, in data visualization
*
Upset forging, a forging process where a workpiece's diameter is increased by compressing its length.
* Upset, a type of fault in wood, see
Shakes (timber) ยง Thunder shake or upset
{{disambiguation