someone's blood is up

US /ˈsʌm.wʌnz blʌd ɪz ʌp/
UK /ˈsʌm.wʌnz blʌd ɪz ʌp/
"someone's blood is up" picture
1.

someone is very angry or excited

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When he heard the news, his blood was up and he started shouting.
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Don't say anything to him now, his blood is really up.
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be in someone's bloodbe after someone's bloodbloodmake someone's blood boilsomeone's (own) flesh and bloodmake someone's blood run coldhave someone's blood on your hands