Added 10 October 2026 leonard noun Categories: PeopleUncommon Words noun ! Definition from WordNet 3.1, Princeton University. More about leonard at Wordnik → Where our words come from → United States writer of thrillers (born in 1925). Related Words: antoineleonardoannesheldonkempfwardnormandvincivaliantcourageousboldintrepid Back to today's word