1 tr. (usu. foll. by of, about, on, or that, how + clause) tell (informed them of their rights; informed us that the train was late).
2 intr. (usu. foll. by against, on) make an accusation.
3 tr. (usu. foll. by with) literary inspire or imbue (a person, heart, or thing) with a feeling, principle, quality, etc.
4 tr. impart its quality to; permeate.
Derivatives:
informant n.
Etymology: ME f. OF enfo(u)rmer f. L informare give shape to, fashion, describe (as IN-(2), forma form)
Useful english dictionary. 2012.