Enter a clue or pattern or both:
The Clue
On one's case (9 letter answer)
The Answer
HARASSING
Tags
Notes
The answer HARASSING is so rare that it appears less than once every 2500 puzzles.
Definition
HARASS as a verb:
1. (harass, hassle, harry, chivy, chivvy, chevy, chevvy, beset, plague, molest, provoke) = annoy continually or chronically; "He is known to harry his staff when he is overworked"; "This man harasses his female co-workers"
2. exhaust by attacking repeatedly; "harass the enemy"