From Longman Dictionary of Contemporary Englishbad bloodbad bloodAGAINST/OPPOSEangry or bitter feelings between peoplebad blood between There’s too much bad blood between them. → bad
Examples from the Corpus
bad blood• There'd been some bad blood between Jose and Arriola over a woman.• There had been bad blood between Laurie and Lisa for months.• It will be great theater because there is truly bad blood between the camps of supporters.• There is bad blood between the options market's leading dealing firms and the stock exchange.• But bad blood between the two had developed years before that.• There was bad blood between Uncle Hal and Uncle Charlie.• Probyn recognises that whenever there is money about, then the potential for bad blood creeping in is always there.• Was this not deft proof of how the human gene-pool was constantly deteriorating, how bad blood drove out good?• But referee Ed Morrison's leniency led to bad blood spilling over in a six-man brawl as Richards looked for revenge. 