Added 10 October 2026 sussex noun Categories: PlacesUncommon Words noun ! Definition from WordNet 3.1, Princeton University. More about sussex at Wordnik → Where our words come from → A county in southern England on the English Channel; formerly an Anglo-Saxon kingdom that was captured by Wessex in the 9th century. Related Words: surreysidneybrightonchichesterleweseastbournehastingsworthingcrawleysouthdownswealdsussexian Back to today's word