What is another word for hard as nails?
Pronunciation: [hˈɑːd az nˈe͡ɪlz] (IPA) 
The phrase "hard as nails" is often used to describe someone who is tough, resilient, and unyielding. However, there are several synonyms that can be used to convey a similar meaning. For instance, "tough as leather" suggests someone who is durable, resistant to wear and tear, and able to withstand challenges. "Strong-willed" implies a person with a steadfast determination and an unwavering resolve to achieve their goals. "Resilient" denotes someone who can bounce back from setbacks and weather tough situations. Other synonyms include "rock-solid," "stalwart," "unflappable," and "iron-willed." All of these terms describe someone who is tough, determined, and unwavering, but each has its own subtle nuances of meaning.
