rash

Definition

A rash is an area of red or irritated skin, often caused by heat, an allergy, or illness. As an adjective, rash also means acting too quickly and without enough thought.

Usage & Nuances

Most commonly, 'rash' is a noun in medical or everyday contexts: 'a skin rash', 'diaper rash'. As an adjective, it is more formal and often appears in phrases like 'a rash decision' or 'don't be rash'. Do not confuse it with 'itch' or 'wound'.

Example Sentences