Level 6 · word 12,565 of 20,000 undoubtedly /ʌnˈdaʊtɪdli/ American adv. 无疑, 必定, 确实地 Definitionadv. certainly, without any doubtExampleThis is undoubtedly the best pizza in town.这无疑是这座城市里最好吃的披萨。