'vigorously-formed' originates from the combination of 'vigorously' and 'formed', where 'vigorously' is derived from 'vigor', meaning 'energy or strength', and 'formed' from 'form', meaning 'to shape or create'.

'vigorously' evolved from the Latin word 'vigorem', meaning 'liveliness', and 'formed' from the Old English 'formian', meaning 'to shape'.

Initially, 'vigorously' meant 'with energy', and 'formed' meant 'shaped'. Together, they convey the idea of something shaped with energy.