Hard to rattle

The clue we have today is Hard to rattle from the USA Today Crossword. The clue Hard to rattle can have many different meanings. We did extensive research, and we have found the solution for the USA Today Crossword Answer. Scroll down the page and then you will find the correct answer for the clue Hard to rattle.

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The answer has 4 letters: COOL

Last usage in USA Today crosswords puzzle.