rash

US /ræʃ/
UK /ræʃ/
"rash" picture
1.

an area of red spots on a person's skin, caused by an illness or a reaction to something

:
The baby developed a diaper rash.
I get a rash if I eat strawberries.
1.

done or made too quickly and without careful consideration

:
It was a rash decision to quit her job without a new one lined up.
Don't make any rash promises.