class up
B2 informal separable transitive
In simple words
To make something look or feel fancier and more special.
Meanings
1 B2
idiomatic
informal
To improve the appearance, quality, or sophistication of something or someone.
"Adding a live string quartet really classed up the wedding reception."
Grammar: separable
2 B2
idiomatic
informal
(ironic/humorous) Used sarcastically to suggest something adds a superficial touch of elegance to an otherwise ordinary or lowbrow setting.
"He put a paper doily under his fast-food burger — really classes up the joint."
Grammar: separable
Usage notes
Common in American English. Often used humorously or ironically (e.g., 'that really classes up the place'). Frequently used sarcastically to suggest something still isn't truly elegant.
Commonly used with
place joint outfit event neighborhood dinner
Forms
Base
class up
I/you/we/they
3rd person
classes up
he/she/it
Past simple
classed up
yesterday
Past participle
classed up
have + pp
-ing form
classing up
continuous
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