exaction > define

noun

• Act of demanding or levying by force or authority.
  • usage: "exaction of tribute"; "exaction of various dues and fees"

• (n.) That which is exacted; a severe tribute; a fee, reward or contribution, demanded or levied with severity or injustice.
• (n.) The act of demanding with authority, and compelling to pay or yield; compulsion to give or furnish; a levying by force; a driving to compliance; as, the exaction to tribute or of obedience; hence, extortion.