Litigious Share definition Flag Excessively inclined to take legal actions in order to settle disputes. Worlds most litigious person Jonathan Lee Riches got the guinness book of world record for having filed over 2600 law suits. Litigious by Lelouch1 January 22, 2015 0 0 Get merch Get the Litigious mug. Buy Now — $32.95 See more merch