in firm

infirm

[in-furm]
adjective
1.
feeble or weak in body or health, especially because of age; ailing.
2.
unsteadfast, faltering, or irresolute, as persons or the mind; vacillating: infirm of purpose.
3.
not firm, solid, or strong: an infirm support.
4.
unsound or invalid, as an argument or a property title.
verb (used with object)
5.
to invalidate.

Origin:
1325–75; Middle English infirme < Latin infirmus. See in-3, firm1

infirmly, adverb
infirmness, noun


1, 3, 4. weak. 2. wavering, indecisive. 3. rickety, tottering, shaky, unsteady.


1, 2, 3. strong.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
infirm (ɪnˈfɜːm)
 
adj
1.  a.  weak in health or body, esp from old age
 b.  (as collective noun; preceded by the): the infirm
2.  lacking moral certainty; indecisive or irresolute
3.  not stable, sound, or secure: an infirm structure; an infirm claim
4.  law (of a law, custom, etc) lacking legal force; invalid
 
in'firmly
 
adv
 
in'firmness
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

infirm
late 14c., "weak, unsound" (of things), from L. infirmus "weak, frail," from in- "not" + firmus (see firm (adj.)). Of persons, "not strong, unhealthy," first recorded 1605.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

infirm in·firm (ĭn-fûrm')
adj.
Weak in body, especially from old age or disease; feeble.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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