in·form (ĭn-fôrm') v.
in·formed, in·form·ing, in·forms
v.
tr.
To impart information to; make aware of something: We were informed by mail of the change in plans. The nurse informed me that visiting hours were over.
To acquaint (oneself) with knowledge of a subject.
To give form or character to; imbue with a quality or an essence: "A society's strength is measured by . . . its ability to inform a future generation with its moral standards"(Vanity Fair).
To be a pervasive presence in; animate: "It is this brash, backroom sensibility that informs his work as a novelist"(Jeff Shear).
Obsolete To form (the mind or character) by teaching or training.
v.
intr.
To give or provide information.
To disclose confidential or incriminating information to an authority: The defendant informed against the other members of the ring.
[Middle English enfourmen, informen, from Old French enfourmer, from Latin īnfōrmāre : in-, in; see in-2 + fōrmāre, to fashion (from fōrma, form).]