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verb in·form \in-ˈfȯrm\

Simple Definition of inform

  • : to give information to (someone)

  • : to be or provide the essential quality of (something) : to be very noticeable in (something)

Source: Merriam-Webster's Learner's Dictionary

Full Definition of inform

  1. transitive verb
  2. 1 obsolete :  to give material form to

  3. 2 a :  to give character or essence to <the principles which inform modern teaching> b :  to be the characteristic quality of :  animate <the compassion that informs her work>

  4. 3 obsolete :  guide, direct

  5. 4 obsolete :  to make known

  6. 5 :  to communicate knowledge to <inform a prisoner of his rights>

  7. intransitive verb
  8. 1 :  to impart information or knowledge

  9. 2 :  to give information (as of another's wrongdoing) to an authority <informed on a member of his own gang>

Examples of inform in a sentence

  1. The book will entertain and inform you.

  2. The arresting officer failed to inform the suspect of his rights.

  3. He failed to inform the suspect that he had the right to remain silent.

  4. We haven't yet been informed of her decision.

  5. Frequent reports from the battlefield kept the general informed about how the attack was progressing.

  6. The book will both entertain and inform.

  7. His Catholic upbringing informs all his writing.

Origin of inform

Middle English, from Anglo-French enformer, from Latin informare, from in- + forma form

First Known Use: 14th century

Synonym Discussion of inform

inform, acquaint, apprise, notify mean to make one aware of something. inform implies the imparting of knowledge especially of facts or occurrences <informed us of the crisis>. acquaint lays stress on introducing to or familiarizing with <acquaint yourself with the keyboard>. apprise implies communicating something of special interest or importance <keep us apprised of the situation>. notify implies sending notice of something requiring attention or demanding action <notified the witness when to appear>.

INFORM Defined for Kids


verb in·form \in-ˈfȯrm\

Definition of inform for Students


  1. 1 :  to let a person know something <I informed him of the changes.>

  2. 2 :  to give information so as to accuse or cause suspicion <He refused to inform on his friends.>

informer noun

Seen and Heard

What made you want to look up inform? Please tell us where you read or heard it (including the quote, if possible).


to expose to danger or risk

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