adjective
Definition: Acting or done quickly and without careful thought, often leading to negative consequences.
Example: Making a rash decision can lead to regret later on.
adverb
Definition: In a way that is done quickly and without thinking carefully about the consequences.
Example: He made a rash decision to quit his job without having another one lined up.
noun
Definition: A skin condition that causes red spots or bumps on the body, often due to irritation or an allergic reaction.
Example: After using the new soap, she developed a rash on her arms.