informative

[in-fawr-muh-tiv]
adjective
giving information; instructive: an informative book.
Also, informatory [in-fawr-muh-tawr-ee, -tohr-ee] .


Origin:
1375–1425; late Middle English: formative < Medieval Latin infōrmātīvus, equivalent to Latin infōrmāt(us) (past participle of infōrmāre to inform1) + -īvus -ive

informatively, adverb
informativeness, noun
noninformative, adjective
noninformatively, adverb
noninformativeness, noun
uninformative, adjective
uninformatively, adverb
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
informative or informatory (ɪnˈfɔːmətɪv)
 
adj
providing information; instructive
 
informatory or informatory
 
adj
 
in'formatively or informatory
 
adv
 
in'formativeness or informatory
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Thanks so much for an informative and educational article.
Each of the bankers' arguments is wrong in interesting and informative ways.
Players draw cards with informative dino-facts to see which ancient bone
  they'll retrieve with the special tool.
The particles that once seemed impossibly esoteric have become ever more
  informative.
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