As hard as nails
Synonyms for As hard as nails
- callous
- hardhearted
- hardened
- hard-bitten
- insensitive
- hard
- as cold as charity
- seared insensitive
- toughened by experience
- casehardened
- impervious
- calloused
- indurated
- inured
- proof against
- pachydermatous
- unsentimental
- steeled against
- thick-skinned
- hard-boiled
- cynical
- case-hardened
- tough
- world-weary
- hard-headed
- lacking sentiment
- unloving
- heartless
- unfeeling
- uncaring
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