Definition of cat-and-dog

1 : resembling or having the character of the proverbial antagonism of dogs and cats:
a : quarrelsome, inharmonious they led a cat-and-dog life together— Ellen Glasgow
b of a fight : malicious and incessant the cat-and-dog fight among the early wire companies— F. L. Mott
2 : being or consisting of cheap or questionable securities : highly speculative cat-and-dog stocks are swinging through sensational gyrations—rising 100 percent in ten days, then collapsing— Sylvia F. Porter

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“Cat-and-dog.” Dictionary, Merriam-Webster, Accessed 11 Jul. 2020.

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