Dictionary.com
Thesaurus.com
Synonyms

hard as nails

Idioms  
  1. Unyielding, callous, unsympathetic, as in Don't ask her for a contribution—she's hard as nails. This expression has replaced the 14th-century simile hard as flint stone and presumably alludes to the rigidity of nails.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

It was that he had all the best qualities you’d want in somebody; his heart of gold, and then you couple that with him just being hard as nails and tough, no quit ever.

From Los Angeles Times ● Oct. 9, 2025

On these second-act hits, Tucker was no longer the wild and wise child; she was a full-grown romantic, who managed to be, at the same time, hard as nails.

From The New Yorker ● Aug. 23, 2019

The death of his son has pushed Cave further into fragility, though he is as hard as nails in some ways and more in control of his audience than ever.

From The Guardian ● Jun. 21, 2019

Chase did it, and he did it the way he's done everything else... hard as nails.

From New York Times ● Oct. 11, 2015

Ain’t nothing in the world that’ll get you feeling fragile quicker than seeing a growned person you know is hard as nails looking afeared.

From "Elijah of Buxton" by Christopher Paul Curtis

Random Word

Spin the wheel and learn a new word!

Get a word


Vocabulary.com logo
by dictionary.com

Just like flashcards, but way more fun

Don't take our word for it. Leave the boring studying behind and join VocabTrainer today. You'll learn even faster and never look back.

Take me to Vocabulary.com