necessary - a) that cannot be dispensed with; essential; indispensable; b) resulting from necessity; inevitable; c) i) that must be done; mandatory; not voluntary; required; ii) not free to choose; compelled by circumstances; d) inherent in the situation; undeniable; unavoidable from the premises.

(Jain.) any of the unavoidable, mandatory acts or duties of a sage, daily.

a person who liquidates, esp. one legally appointed to liquidate a company, etc; a liquidator.