Litigation rhymes with:
investigation, abrogation, allegation, congregation, conjugation, delegation, desegregation, fumigation, interrogation, investigation, irrigation, navigation, negation, obligation, propagation, segregation, surrogation
investigation, abrogation, allegation, congregation, conjugation, delegation, desegregation, fumigation, interrogation, investigation, irrigation, navigation, negation, obligation, propagation, segregation, surrogation