sim·ple·ton
noun/ˈsɪmpltən/
/ˈsɪmpltən/
(old-fashioned, offensive)- a person who you think is silly or stupid and can be easily tricked
你认为很傻或很愚蠢并且很容易被欺骗的人 Word Originmid 17th cent.: from simple, on the pattern of surnames derived from place names ending in -ton.