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



BrE BrE//ˌɪɡnəˈreɪməs//
; NAmE NAmE//ˌɪɡnəˈreɪməs//
(usually humorous)
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a person who does not have much knowledge When it comes to music, I'm a complete ignoramus. Word Originlate 16th cent. (the declarationof a grand jury about an accusation/​claim which they considered to be backed by insufficient evidence to bring before a normal jury): Latin, literally ‘we do not know’ (in legal use ‘we take no notice of it’), from ignorare ‘not know, ignore’, from in- ‘not’ + gno-, a base meaning ‘know’. The modern sense may derive from the name of a character in George Ruggle's Ignoramus (1615), a satirical comedy exposing lawyers' ignorance.
See the Oxford Advanced American Dictionary entry: ignoramus