'smoothly-molded' originates from the combination of 'smoothly' and 'molded'. 'Smoothly' comes from the Old English 'smōth', meaning 'even or free from roughness', and 'molded' comes from the Old French 'moldier', meaning 'to shape or form'.

'smoothly-molded' evolved from the combination of 'smoothly' and 'molded', which were used separately in Middle English and later combined in modern English to describe objects crafted with precision.

Initially, 'smoothly' and 'molded' were used separately to describe texture and shaping, respectively. Over time, they combined to describe objects crafted with precision and care.