verb
inform
in-FORM/ɪnˈfɔːrm/
To convey previously unknown information to someone.
The nurse informs the patient about the lungs using a diagram.

Etymology
The original image was giving form or shape to something. This became a figurative expression for training or instructing someone, then for communicating facts or news.
In context
I would also contact you, the transportation managers to inform them of the accident. Finally, step 5 would be to speak to the emergency services
More examples
- Please inform the nurse about any allergies.
- The letter informed us that our application had been approved.
- A witness informed on the thieves.
Forms
inform · informs · informed · informing
information noun — Facts or knowledge communicated to someone.
informer noun — Someone who reports wrongdoing to authorities.