'adamant' originates from Latin, specifically the word 'adamantem,' where 'a-' meant 'not' and 'damant' meant 'tameable.'

'adamantem' transformed into the Old French word 'adamant,' and eventually became the modern English word 'adamant' through Middle English.

Initially, it meant 'untameable or unbreakable,' but over time it evolved into its current meaning of 'unyielding or inflexible.'