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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.
Recently, a chap who is celebrated as an indomitable fighter for human rights posted a message against a politician that was not only nasty but quite imbecilic.
THIS week's esteemed PISH award (Predatory, Imbecilic, Sexist Horror) is being lobbed over to Ilie Nastase for his relentless volley of offensive comments and shocking outbursts aimed at female tennis players over the past few weeks.
They verbally abused the European players and the fan that told Justin Rose that he was "in the way" is a typical example of their imbecilic behaviour.
Yoga Hosers" is an imbecilic, strenuously wacky helping of see-what-sticks juvenilia that finds director Kevin Smith continuing the "True North Trilogy" he began with 2013's rather more endurable "Tusk.
I'm not saying I admired them, but I will say there is something admirable in someone who says 'no, I will make my own way, I won't accept stupid and imbecilic kinds of laws', such as we have in England.
Tory Defence Secretary Michael Fallon came across as a deranged Dr Strangelove, an unhinged character out of control, when he self-destructed with an imbecilic assault on Ed Miliband.
If you are too dim-witted, or too fixated with reality TV and imbecilic celebrities, to understand the issues that affect every single person in this country, then we should introduce public meetings and citizenship classes which should teach people what each party stands for, and why it matters so much to stand up for what you believe in.
Make no mistakes, it's also a muscle car and the sort of machine you feel safe in when you have to cope with some of the menaces on the roads of Bahrain, although it must be acknowledged that things appear to have settled down slightly since the introduction of the threat of hefty fines for those imbecilic speeding lane-hoppers.
Dumber To also lacks any charm and assumes the audience has the same IQ as the imbecilic heroes.
If as president I am asked what I think about the death of a rock star, or the imbecilic opinions of rich blowhards who own professional sports teams, I will say: 'Americans should have no interest in my thoughts about such things, if I had any.
Another obvious observation that borders on the imbecilic, was the statement that Europe must create jobs.