Akademik

het up
adj. colloq. excited, overwrought.
Etymology: het dial. past part. of HEAT

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adjective
Etymology: het (V)
chiefly dialect : being in a state of excitement : worked up : angry — used especially to connote indignation or enthusiasm

had been terrible het up over chickadees — Esther Forbes

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/het/, Informal.
1. indignant; irate; upset: She was really het up about the new city tax.
2. enthusiastic: John is suddenly het up about racing cars.
[1920-25; het, archaic or dial. ptp. of heat + UP]

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het up
1. Agitated
2. Angry
• • •
Main Entry:het

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het up UK [ˌhet ˈʌp] US adjective informal
excited, worried, or angry about something
Thesaurus: feeling angry or annoyedsynonym feeling worried and nervoussynonym

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[ˌhet 'əp]
adj. [predic.] informal angry and agitated

her husband is all het up about something

Origin:
mid 19th cent.: from dialect het ‘heated, hot’, surviving in Scots

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/ˈhɛtˈʌp/ adj [more \het up; most \het up]
informal + somewhat old-fashioned : very excited or upset

John can get all/very het up about/over politics.

What are you so het up about?

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het up [ˌhet ˈʌp] [ˌhet ˈʌp] adjective not before noun \het up (about/over sth) (BrE, informal)
anxious, excited or slightly angry

What are you getting so het up about?

 
Word Origin:
[het up] mid 19th cent.: from dialect het ‘heated, hot’, surviving in Scots and northern English dialect.  
Example Bank:

He was all het up about the extra cost.

She got rather het up with some of the journalists.


Useful english dictionary. 2012.