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insensitive

[in-sen-si-tiv] /ɪnˈsɛn sɪ tɪv/
adjective
1.
deficient in human sensibility, acuteness of feeling, or consideration; unfeeling; callous:
an insensitive person.
2.
not physically sensitive:
insensitive skin.
3.
not affected by physical or chemical agencies or influences:
insensitive to light.
4.
not readily responsive or aware:
insensitive to the needs of the peasants.
Origin
1600-1610
1600-10; in-3 + sensitive
Related forms
insensitiveness, insensitivity, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for in sensitivity's

insensitive

/ɪnˈsɛnsɪtɪv/
adjective
1.
lacking sensitivity; unfeeling
2.
lacking physical sensation
3.
(postpositive) foll by to. not sensitive (to) or affected (by) insensitive to radiation
Derived Forms
insensitively, adverb
insensitiveness, insensitivity, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for in sensitivity's
insensitive
1610, "having little or no reaction to what is perceived by one's senses," from in- "not" + sensitive. See insensate.
Online Etymology Dictionary, © 2010 Douglas Harper
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3
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