'dearest' originates from Old English, specifically the word 'dēore,' where 'dēor' meant 'precious' or 'valuable.'

'dēore' transformed into the Middle English word 'dere,' and eventually became the modern English word 'dear,' with 'dearest' as its superlative form.

Initially, it meant 'precious or valuable,' but over time it evolved into its current meaning of 'most loved or cherished.'