Definition of "imbecility" []

• Great stupidity or foolishness. (noun)
• Something, such as conduct or an act, that is stupid or foolish. (noun)
• Psychology The state or condition of being an imbecile; moderate or severe mental retardation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Armitage gave himself a mental kick for what he termed his imbecility, and went back to the hotel."
• "If youth, inexperience or just plain imbecility factors in to make the killing a waste through loss of meat or trophy -- I say we give the goofball a good stomping!"
• "Young men are more frequently wanton and dissolute than old men; but yet, as it is not all young men that are so, but the bad set among them, even so senile folly -- usually called imbecility -- applies to old men of unsound character, not to all."