het up is an adjective meaning "made warm or hot (`het' is a dialectal variant of `heated')". It carries 2 recorded senses.
worked up emotionally by anger or excitement
“was terribly het up over the killing of the eagle”
“got really het up over the new taxes”
“he was suddenly het up about racing cars”
colloquialism
Definitions, synonyms and semantic relations for het up come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.