'unwillingly-collected' originates from the combination of 'unwillingly' and 'collected', where 'unwillingly' means 'without desire or consent' and 'collected' means 'gathered or accumulated'.

'unwillingly' and 'collected' have been used separately in English for centuries, but their combination into 'unwillingly-collected' is a modern construct to describe data or items gathered without consent.

Initially, 'unwillingly' and 'collected' were used separately, but their combination now specifically refers to the act of gathering without consent.