Enter a clue or pattern or both:
The Clue
Impromptu (14 letter answer)
The Answer
UNPREMEDITATED
Tags
Notes
The answer UNPREMEDITATED is so rare that it appears less than once every 2500 puzzles.
Definition
UNPREMEDITATED as an adjective:
1. not prepared or planned in advance; "asked an unpremeditated question"
2. not premeditated