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informative

[in-fawr-muh-tiv]
adjective
  1. giving information; instructive: an informative book.
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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

British Dictionary definitions for non-informative

informative

informatory

adjective
  1. providing information; instructive
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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 non-informative

informative

adj.

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

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Online Etymology Dictionary, © 2010 Douglas Harper