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To make someone, something, or oneself appear more visually attractive, appealing, or fashionable. In this usage, a noun or pronoun can be used between "spiff" and "up." They spiffed up that ramshackle old building—it's so hip and modern looking now! Tommy and Sarah are going to help spiff me up a bit before my date.
Made to look more attractive, fashionable, or appealing. I like how spiffed out this place looks since you guys took over. I like getting a little spiffed up for a night on the town.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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.
dressed up, groomed, and polished up nicely; clean and tidy. See if you can get yourself a little spiffed up before we go out to dinner. We wouldn't want the Wilmington-Thorpes to think you only have one suit. The house doesn't have to be too spiffed up for the Franklins. They are used to clutter.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
To make attractive, stylish, or up-to-date: The owners spiffed up the old storefront. I found my old bike and spiffed it up.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
mod. dressed up, brushed up, and polished up nicely. See if you can get yourself a little spiffed up before we get to the front door. We wouldn’t want the Wilmington-Thorpes to think you only have one suit.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.