Reckless

RASH

Think of a word that describes a sudden skin irritation or an impulsive decision made without careful thought.

"Reckless" is a straightforward definition clue pointing to "RASH," which means acting without caution or thought. The word also fits because "rash" can describe a hasty decision, matching the idea of being careless or impulsive. No wordplay here—just a direct synonym where the answer perfectly captures the clue’s meaning.