FEIN
Set to 3 different clues across 9 published puzzles, most often “Sinn ___” — The New York Times, Thursday, 8 November 2007.
4 letters
Every clue on record, most used first
- Sinn ___7 times
The New York Times — Thursday, 8 November 2007
- Ireland's Sinn ___once
The New York Times — Monday, 20 June 2005
- Sinn ___ (Irish organization)once
The New York Times — Monday, 2 September 2002