1) to accuse wrongfully, to calumniate, to attack by malicious devices
 2) to exact money wrongfully
    2a) to extort from, defraud

 At Athens those were "sukophantia" whose business it was to inform
 against any one whom they might detect exporting figs out of Attica;
 and as sometimes they seemed to extort money from those loath to be
 exposed, the name "sukophantes" from the time of Aristophanes down
 was a general term of opprobrium to designate, a malignant and base
 accuser from love of gain.