Below is the solution for the question: Toughen from the Canadiana Crossword. Bookmark this website for Canadiana Crossword Answers.
Question: Toughen
Solution: ANNEAL
ANNEAL Definition 1:
To heat and then slowly cool (metal, glass, etc.) in order to make it stronger.
Need other answers from the same crossword? Go back to this link to find another answer July 23, 2018 Canadiana Crossword Answers