1
general::
adj.
impulsive:
It was a rash act on her part., adj.
done in haste, with little thought:
To us it was a rash decision.
noun
skin eruption:
She developed a rash on her neck.
Simple Definitions
2
general::
noun ADJ. skin | itchy | allergic | heat, nappy, nettle VERB + RASH have | break out in, come out in When I'm stressed I break out in a rash. RASH + VERB appear, come out, spread The rash most commonly appears on the back. PREP. ~ on He's got a slight rash on his chest.
Oxford Collocations Dictionary