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 (ĭm′bə-sĭl, -səl)
1. A person who is considered foolish or stupid.
2. A person with moderate to severe intellectual disability having a mental age of from three to seven years and generally being capable of some degree of communication and performance of simple tasks under supervision. The term belongs to a classification system no longer in use and is now considered offensive.

[From obsolete French imbécille, weak, feeble, from Old French, from Latin imbēcillus : in-, not; see in-1 + possibly bacillum, staff, diminutive of baculum, rod; see bak- in Indo-European roots.]

im′be·cil′ic (-sĭl′ĭk) adv.


(ˌɪm bəˈsɪl ɪk)

contemptibly stupid or silly.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.imbecilic - having a mental age of three to seven years
retarded - relatively slow in mental or emotional or physical development; "providing a secure and sometimes happy life for the retarded"


References in classic literature ?
Vngngn, imbecile and chief that he was, was too imbecilic, too much under the sway of Ngurn, to be considered.
From his introductory declaration that there was ``a new sheriff in town'' to the imbecilic message he left for a UCLA recruit's AAU coach on behalf of his good buddy Steve Lavin that wound up on the answering machine of the recruit's family, Malone's tenure was weakened by foot-in-mouth disease.
But I have finally come to the conclusion that it is impossible to respect the right of the majority of people who partake in these shows to express their imbecilic views.
I know that we in the capital are now supposed to fall patriotically into line behind the bid, and spend the next year doing the Lambeth Walk while wearing imbecilic, cheeky-chappie grins for the benefit of any passing IOC freeloaders.
But as the film shows - abetted handily by the networks' imbecilic reactions following the real debates this year - TV journalism is pretty much a sham already, a shallow stream of specious opinions and context-free factoids.
I initially felt overwhelming sympathy for him, believing he was wearing the jacket under duress as part of some idiotic rule which demands that three-times champions have to dress up like boarding school pupils or that this was part of the preposterous makeover the line judges, umpires and ballboys and ballgirls underwent, which forced them to carry out their crucial duties while dressed like imbecilic toffs.
Space Ghost insults or, more frequently, ignores his guests (this month's include Bob Costas, Steven Wright and Hanson) to reflect, insipidly, on matters imbecilic.
We are hostages and our captors are Motson, Tyldesley, Drury and the rest of the inept goons who are doing their utmost to ruin this enthralling World Cup with their torrent of imbecilic remarks.
2) In ``The Dinner Game,'' tax accountant Francois (Jacques Villeret), left, is deliberately chosen by publisher Pierre (Thierry Lhermitte) to be an imbecilic dinner guest.
Frequently, decisions are made which are truly imbecilic and which intelligent fans would never get so wrong.
Sandler is still more of a comic than an actor, but he certainly knows how to tell a joke, when to share the spotlight and how to make an imbecilic character come to life.
But road-users should be protected from drivers who are suddenly exposed to imbecilic opinions on radio phone-ins which render them so angry they are likely to accelerate at maximum speed towards the nearest solid object in order to end the madness.