In*form"ant (?), n. [L. informans, -antis, p.pr. of informare. See Inform, v. t.]
One who, or that which, informs, animates, or vivifies.
One who imparts information or instruction.
One who offers an accusation; an informer. See Informer.
[Obs. or R.]
It was the last evidence of the kind; the informant
© Webster 1913.