1 C1
Not a recognised standard English phrasal verb. Possibly used informally to describe the appearance of a rash on the skin.
rash up
C1
Not a recognised standard English phrasal verb; may refer to developing a skin rash or, in slang, to do something hastily.
In plain English
This is not a standard English phrasal verb. Learners should be cautious using it.
What does "rash up" mean?
One main meaning — here's how to use it.
Usage tip
'Rash up' does not appear as a defined phrasal verb in standard dictionaries. In some informal or regional use, it might describe breaking out in a rash (skin irritation), but this is not established usage. Learners should avoid this expression and use 'break out in a rash' instead.
How to conjugate "rash up"
The five tense forms you'll use most often.
Base
rash up
I/you/we/they
3rd person
rashes up
he/she/it
Past simple
rashed up
yesterday
Past participle
rashed up
have + pp
-ing form
rashing up
continuous
Hear "rash up" in the wild
Listen to native speakers using "rash up" in real YouTube videos — click a clip to watch it on Looplines.
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