As hard as nails
Hard-headed and as hard as nails are semantically related. In some cases you can use "Hard-headed" instead an adjective phrase "As hard as nails".
Hard-headed
As hard as nails and hard-headed are semantically related. Sometimes you can use "As hard as nails" instead an adjective phrase "Hard-headed".
Mutual synonyms
Cite this Source
Hard-headed and As hard as nails. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/as_hard_as_nails/hard-headed
As hard as nails & Hard-headed. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/as_hard_as_nails/hard-headed>.
Hard-headed or As hard as nails. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/as_hard_as_nails/hard-headed.
