Definition of simpleton noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈsɪmpltən//
; NAmE NAmE//ˈsɪmpltən//
(old-fashioned) Stupid
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a person who is not very intelligent and can be tricked easily See related entries: Stupid Word Originmid 17th cent.: from simple, on the pattern of surnames derived from place names ending in -ton.
See the Oxford Advanced American Dictionary entry: simpleton