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."
separable
class up
B2 informal separable transitive
To make something or someone more elegant, sophisticated, or impressive.
In plain English
To make something look or feel fancier and more special.
What does "class up" mean?
2 meanings, ordered from most common to least. Color-coded by CEFR level.
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."
separable
Usage tip
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.
Words that pair with "class up"
Natural word combinations native speakers use most often.
place joint outfit event neighborhood dinner
How to conjugate "class up"
The five tense forms you'll use most often.
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
Hear "class up" in the wild
Listen to native speakers using "class up" in real YouTube videos — click a clip to watch it on Looplines.
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