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unsatisfactory

[uhn-sat-is-fak-tuh-ree] /ˌʌn sæt ɪsˈfæk tə ri/
adjective
1.
not satisfactory; not satisfying or meeting one's demands; inadequate.
Origin of unsatisfactory
1630-1640
First recorded in 1630-40; un-1 + satisfactory
Related forms
unsatisfactorily, adverb
unsatisfactoriness, noun
Synonyms
disappointing, insufficient.
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Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for unsatisfactory

unsatisfactory

/ˌʌnsætɪsˈfæktərɪ; -trɪ/
adjective
1.
not adequate or suitable; unacceptable
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 unsatisfactory
adj.

1640s, from un- (1) "not" + satisfactory.

Online Etymology Dictionary, © 2010 Douglas Harper
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