Clue: Toughens
We have 4 answers for the clue Toughens. See the results below.
Possible Answers:
Related Clues:
- Tempers
- Treats steel
- Heats, as glass
- Uses heating-cooling
- Uses a heating-process
- Hardens
- Toughens, as metal
Last Seen In:
- New York Times - August 10, 2022
- New York Times - July 03, 2020
- New York Times - November 23, 2019
- USA Today - October 20, 2016
- New York Times - October 24, 2015
- LA Times - June 10, 2015
- New York Sun - August 11, 2008
- LA Times Sunday - May 25, 2008
- New York Times - January 26, 2008
- New York Times - June 25, 2006
- LA Times - September 11, 2005
- New York Times - January 17, 2002
- New York Times - April 30, 1999
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