as hard as nails

idiom

Definition of as hard as nails

: very tough : not sentimental or easily influenced He's as hard as nails.

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Cite this Entry

“As hard as nails.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/as%20hard%20as%20nails. Accessed 20 Jan. 2021.

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