Meaning of “(as) tough as nails” in the English Dictionary

American

"(as) tough as nails" in American English

See all translations

(as) tough as nails

also (as) hard as nails

strong and very determined:

She is a warm and friendly person, but she is also as tough as nails at work.

(Definition of “(as) tough as nails” from the Cambridge Academic Content Dictionary © Cambridge University Press)