To inform is defined as to tell, give knowledge or information.(verb)
An example of to inform is someone telling a friend what time they'll arrive.
See inform in Webster's New World College Dictionary
Origin: ME informen < OFr enformer < L informare: see in- & form
Origin: Fr informe < L informis
See inform in American Heritage Dictionary 4
verb in·formed, in·form·ing, in·forms verb, transitive
Origin: Middle English enfourmen, informen
Origin: , from Old French enfourmer
Origin: , from Latin īnfōrmāre
Origin: : in-, in; see in-2
Origin: + fōrmāre, to fashion (from fōrma, form).
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