rash up
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
To develop a rash.
Register: informal
Where it’s used:
Used
American English
Examples
I felt awful, and I rashed up all over.
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “rash up” mean?
To develop a rash.
Is “rash up” formal or informal?
rash up is generally informal.