watchlist UK /ˈwɒt͡ʃˌlɪst/US /ˈwɔt͡ʃˌlɪst/noun 1verb 1forms 3 noun1 •A list of people or things that are assigned to receive special attention or monitoring.The police have hundreds of citizens on their watchlists. verb1 •To add to a watchlist. formswatchlisted · watchlisting · watchlists