litigation
Concise Oxford English Dictionary © 2008 Oxford University Press:
litigate /ˈlɪtɪgeɪt/
▶verb go to law; be a party to a lawsuit.
■ take (a dispute) to a law court.
– derivatives
litigation noun,
litigator noun.
litigation noun,
litigator noun.
– origin C17 (earlier (C16) as litigation): from L. litigat-, litigare ‘to dispute in a lawsuit’, from lis, lit- ‘lawsuit’.
'litigation' also found in these Oxford entries:

