REDI
Set to 3 different clues across 4 published puzzles, most often “Quick, in trade names” — The New York Times, Thursday, 19 January 2006.
4 letters
Every clue on record, most used first
- Quick, in trade names2 times
The New York Times — Thursday, 19 January 2006
- ___-Tea (first instant iced tea)once
The New York Times — Tuesday, 18 September 2001
- Commercial prefix meaning "convenient to use"once
The New York Times — Sunday, 13 September 1998