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informative

[in-fawr-muh-tiv] /ɪnˈfɔr mə tɪv/
adjective
1.
giving information; instructive:
an informative book.
Also, informatory
[in-fawr-muh-tawr-ee, -tohr-ee] /ɪnˈfɔr məˌtɔr i, -ˌtoʊr i/ (Show IPA)
.
Origin
1375-1425
1375-1425; late Middle English: formative < Medieval Latin infōrmātīvus, equivalent to Latin infōrmāt(us) (past participle of infōrmāre to inform1) + -īvus -ive
Related forms
informatively, adverb
informativeness, noun
noninformative, adjective
noninformatively, adverb
noninformativeness, noun
uninformative, adjective
uninformatively, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for informatory

informative

/ɪnˈfɔːmətɪv/
adjective
1.
providing information; instructive
Derived Forms
informatively, adverb
informativeness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for informatory

informative

adj.

"instructive," late 14c., "formative, shaping, plastic," from Medieval Latin informativus, from Latin informatus, past participle of informare (see inform). Related: Informatively.

Online Etymology Dictionary, © 2010 Douglas Harper
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