spiff up
B2 informal both transitive
In simple words
to make something look nicer and neater
Literal meaning: to make something spiffy, or smart-looking
Meanings
1 B2
idiomatic
informal
to clean, improve, or decorate something so it looks smarter and more attractive
"They spiffed up the front office before the clients arrived."
Grammar: both
2 B2
idiomatic
informal
to make yourself look smarter by washing, grooming, or dressing well
"Go and spiff yourself up before dinner."
Grammar: both
Usage notes
Informal and slightly old-fashioned, especially in American English. Often used for clothes, rooms, storefronts, or appearance.
Commonly used with
room house appearance store office outfit
Forms
Base
spiff up
I/you/we/they
3rd person
spiffs up
he/she/it
Past simple
spiffed up
yesterday
Past participle
spiffed up
have + pp
-ing form
spiffing up
continuous
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