(adv.) In a dishonest manner.

abominably atrociously awfully basely bestially brutally contemptibly criminally crookedly deceitfully despicably detestably deviously discreditably disgustingly dishonestly dishonorably disreputably dreadful dreadfully dubiously egregiously evasively feloniously fishily flagrantly foully fraudulently fulsomely grossly horribly horridly ignominiously ingloriously insidiously knavishly loathsomely nastily nauseatingly notoriously obnoxiously odiously offensively outrageously roguishly savagely scandalously shabbily shamefully shiftily shockingly something fierce sordidly suspiciously terribly unconscientiously underhandedly unrespectably unscrupulously viciously vilely villainously wretchedly