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unconcerned

[uhn-kuh n-surnd] /ˌʌn kənˈsɜrnd/
adjective
1.
not involved or interested; disinterested.
2.
not caring; unworried; free from solicitude or anxiety.
Origin of unconcerned
1625-1635
1625-35; un-1 + concerned
Related forms
unconcernedly
[uhn-kuh n-sur-nid-lee] /ˌʌn kənˈsɜr nɪd li/ (Show IPA),
adverb
unconcernedness, noun
Synonyms
2. untroubled, unperturbed, composed, carefree.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for unconcerned

unconcerned

/ˌʌnkənˈsɜːnd/
adjective
1.
lacking in concern or involvement
2.
not worried; untroubled
Derived Forms
unconcernedly (ˌʌnkənˈsɜːnɪdlɪ) adverb
unconcernedness, 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 unconcerned
adj.

1630s, from un- (1) "not" + past participle of concern.

Online Etymology Dictionary, © 2010 Douglas Harper
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Word Value for unconcerned

16
22
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