CATALYST
Set to 3 different clues across 3 published puzzles, most often “Spark” — The New York Times, Saturday, 18 October 1997.
8 letters
Every clue on record, most used first
- Sparkonce
The New York Times — Saturday, 18 October 1997
- Instigatoronce
The New York Times — Wednesday, 4 January 1995
- Part of a chemical reactiononce
The New York Times — Sunday, 17 April 1994