harborEnglishOxford American Thesaurusharbor noun 1 the boat was tied up in the harbor: port, dock, haven, marina, dockyard, boatyard, mooring, anchorage, roads, waterfront; jetty, quay, pier, slipway, wharf, landing stage; rare harborage, moorage, roadstead, hithe. 2 I am looking for a kind man who is a safe harbor for me: refuge, haven, safe haven, shelter, sanctuary, retreat, asylum, place of safety, place of security, port in a storm, oasis, sanctum.verb 1 he was suspected of harboring an escaped prisoner: shelter, conceal, hide, shield, protect, give asylum to, give sanctuary to, give shelter to, provide a refuge for; accommodate, lodge, put up, take in, billet, house. ▷antonyms hand over. 2 he had never harbored any hostile feelings against them: bear, nurse, nurture, cherish, entertain, foster, feel secretly, hold onto, cling to, possess, maintain, retain.