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informative

[in-fawr-muh-tiv]
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adjective
  1. giving information; instructive: an informative book.
Also in·form·a·to·ry [in-fawr-muh-tawr-ee, -tohr-ee] /ɪnˈfɔr məˌtɔr i, -ˌtoʊr i/.

Origin of informative

1375–1425; late Middle English: formative < Medieval Latin infōrmātīvus, equivalent to Latin infōrmāt(us) (past participle of infōrmāre to inform1) + -īvus -ive
Related formsin·form·a·tive·ly, adverbin·form·a·tive·ness, nounnon·in·for·ma·tive, adjectivenon·in·for·ma·tive·ly, adverbnon·in·for·ma·tive·ness, nounun·in·form·a·tive, adjectiveun·in·form·a·tive·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for informative

informative

informatory

adjective
  1. providing information; instructive
Derived Formsinformatively, adverbinformativeness, 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

Word Origin and History for 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