v.
   - give information to.
 - 
(inform on)
 give incriminating information about (someone) to the police or other authority.
 - give an essential or formative principle or quality to:
 religion informs every aspect of their lives.
 
 
  Etymology
  ME enforme, informe ‘give form to’, from OFr. enfourmer, from L. informare ‘shape, describe’.