3
palladium(noun, element)
3
persistent(adjective, obstinate, insistent, dogged)
3
phosphorus(noun, element)
3
pillory
3
plane(verb, calm, quiet, clear, press)
3
polonium(noun, element)
3
praseodymium(noun, element)
3
promethium(noun, element)
3
protactinium(noun, element)
3
radium(noun, element)
3
refractory(adjective, persistent, obstinate, insistent, dogged)
3
rhenium(noun, element)
3
rock
3
rock-ribbed(adjective, determined, resolute, uncompromising, unshakeable)
3
rubidium(noun, element)
3
ruthenium(noun, element)
3
samarium(noun, element)
3
scandium(noun, element)
3
single-minded(adjective, tough, firm, unreasonable, grim)
3
smoothing iron(noun, expression, idiom)
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APASmart Define. (2015). iron thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/iron/thesaurus/synonyms
ChicagoSmart Define. 2015. "iron thesaurus" https://smartdefine.org/iron/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, iron thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/iron/thesaurus/synonyms>.
MLASmart Define. "iron thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/iron/thesaurus/synonyms>