on the warpath
on the warpath {adj. phr.}, {informal}
1. Very angry.
When Mother saw the mess in the kitchen she went on the warpath.
Betty has been on the warpath ever since she found out she was not invited to the party.
2. Making an attack; fighting.
The government is on the warpath against narcotics.
The police are on the warpath against speeders.
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Source: A Dictionary of American Idioms
