Hardest
Both words in one sentence
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But inspired by how his father, a policeman who tried his hardest to protect the city, he uses his new power to protect humanity as the Iron Knight.Originally a oneshot, it was serialized in Weekly Shounen Jump, but was cancelled after 16 chapters.
Source: Manga / Iron Knight -
Jadeite and Sailor Iron Mouse from Sailor Moon - both try their hardest and get no respect for their efforts.
Source: Butt Monkey / Anime and Manga - The hardest villains under this system (rated 4 out of 4) are The Chairman, Iron Legacy, The Matriarch, and Progeny.
Cite this Source
Iron and Hardest. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/hardest/iron
Hardest & Iron. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/hardest/iron>.
Iron or Hardest. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/hardest/iron.
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