incapable

[in-key-puh-buhl]
adjective
1.
not capable.
2.
not having the necessary ability, qualification, or strength to perform some specified act or function: As an administrator, he is simply incapable.
3.
without ordinary capability; incompetent.
noun
4.
a thoroughly incompetent person, especially one of defective mentality.
Idioms
5.
incapable of,
a.
not having the ability, qualification, or strength for (a specified act or function).
b.
not open to; not susceptible to or admitting: These materials are incapable of exact measurement.
c.
legally unqualified for.

Origin:
1585–95; < Late Latin incapābilis. See in-3, capable

incapability, incapableness, noun
incapably, adverb


1. Incapable, incompetent, inefficient, unable are applied to a person or thing that is lacking in ability, preparation, or power for whatever is to be done. Incapable usually means inherently lacking in ability or power: incapable of appreciating music; a bridge incapable of carrying heavy loads. Incompetent generally used only of persons, means unfit or unqualified for a particular task: incompetent as an administrator. Inefficient means wasteful in the use of effort or power: an inefficient manager; inefficient methods. Unable usually refers to a temporary condition of inability to do some specific thing: unable to relax, to go to a concert. 2. impotent, unqualified.


1. able.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
incapable (ɪnˈkeɪpəbəl)
 
adj (when postpositive, often foll by of) (foll by of)
1.  not capable (of); lacking the ability (to)
2.  powerless or helpless, as through injury or intoxication
3.  not susceptible (to); not admitting (of): a problem incapable of solution
 
incapa'bility
 
n
 
in'capableness
 
n
 
in'capably
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

incapable
c.1600, from in- "not " + capable.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
They're convinced painters are incapable of reason and oblivious to real-world
  matters.
His government was also incapable of agreeing on, and then steering through
  parliament, the necessary measures.
The queen bee is incapable of feeding herself or grooming herself.
For years, scientists believed that damaged nerve tissue could not be repaired
  because neurons are incapable of regeneration.
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