simple past tense and past participle of inform
"The witness informed the police that she saw the suspect fleeing the scene at midnight."
In plain English: To inform someone is to give them the facts they need to make a decision.
"I informed my boss that I would be late for work."
Usage: Use "informed" to describe someone who has been told about something or possesses specific knowledge. You can say that you were informed of the meeting time or that the report was based on informed data.
having much knowledge or education
"an informed public"
"informed opinion"
"the informed customer"
Instructed; having knowledge of a fact or area of education.
"The raw data was finally informed into a clear visual chart that everyone could understand."
Created, given form.
In plain English: Informed means having all the facts you need to make a smart decision.
"The informed voter carefully read all the candidates' platforms before casting their ballot."
Usage: Do not use "informed" to mean created or given form; that is a rare technical sense unrelated to daily speech. Instead, use it only when describing someone who possesses knowledge about a specific subject.
The word informed comes from combining the verb inform with the past tense suffix -ed. It entered English as a standard way to describe someone who has been given information or knowledge about something.