'assertively-contoured' is a compound word formed from 'assertive' and 'contoured'. 'Assertive' originates from Latin 'assertus', meaning 'to affirm', and 'contoured' comes from 'contour', which is derived from the French 'contour', meaning 'outline'.

'Assertive' evolved from the Latin 'assertus' through Old French 'assertif', while 'contour' was borrowed from French in the 17th century.

Initially, 'assertive' meant 'to affirm or declare', and 'contour' meant 'outline'. Together, they describe something with a bold and defined shape.