ἀδάμας

Etymology
Often derived from +, as “indomitable”, but Beekes remarks that semantically this is strange and the word is rather a 🇨🇬 borrowing that was adapted by folk etymology; compare 🇨🇬 or. 🇨🇬 is probably from the same source.

Noun

 * 1) adamant, the hardest metal (probably steel)
 * 2) a hard metal resembling gold
 * 3) diamond

Adjective

 * 1)  fixed, unalterable
 * 2) not to be broken, inflexible