a horse of a different color

noun phrase

Definition of a horse of a different color

chiefly US, informal
: a very different thing or issue That's what we'll do when he gets here. But if he doesn't show up…well, that's a horse of a different color.

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“A horse of a different color.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/a%20horse%20of%20a%20different%20color. Accessed 20 Sep. 2020.

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