informative

What it means

1. Providing information; especially, providing useful or interesting information.

   I read a very informative newspaper article on that subject last week.

   Synonyms: informatory, instructive · Antonyms: uninformative

2. Of a standard or specification, not specifying requirements, but merely providing information.

   Antonyms: normative

3. obsoleteFormative; having power to form.

In a sentence

I read a very informative newspaper article on that subject last week.

Where it comes from

From inform + -ative.