inform: [14] When English first acquired inform (via Old French enfourmer) it was used simply for ‘give form or shape to’. However, its Latin original, informāre (a compound verb based on forma ‘form’), had in classical times moved on from the primary notion of ‘shaping’ via ‘forming an idea of something’ and ‘describing it’ to ‘telling or instructing people about something’. English took this sense over too, and has persevered with it, but ‘give shape to’ was dropped in the 17th century. => form[inform etymology, inform origin, 英语词源]