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spiff up

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spiff something up

to polish and groom something very well; to make something clean and tidy. See if you can spiff this place up a little. I will spiff up the room a little.

See also: spiff, up

spiff up

v. Slang

To make attractive, stylish, or up-to-date: The owners spiffed up the old storefront. I found my old bike and spiffed it up.

See also: spiff, up