'regular-shaped' originates from the combination of 'regular' and 'shape,' where 'regular' comes from Latin 'regularis,' meaning 'consistent' or 'rule-based,' and 'shape' from Old English 'sceap,' meaning 'form.'

'regular' changed from the Latin word 'regularis' and eventually became the modern English word 'regular.' 'Shape' evolved from Old English 'sceap' to the modern English 'shape.'

Initially, 'regular' meant 'consistent or rule-based,' and 'shape' meant 'form.' Together, they describe something with a consistent form.