Do wrongly or improperly.

Roget 945: be vicious etc. adj.; sin, commit sin, do amiss, err, transgress; misdemean oneself^†, forget oneself, misconduct oneself; misdo^†, misbehave; fall, lapse, slip, trip, offend, trespass; deviate from the line of duty, deviate from the path of virtue etc. 944; take a wrong course, go astray; hug a sin, hug a fault; sow one's wild oats.    render vicious etc. adj.; demoralize, brutalize; corrupt etc. (degrade) 659.    ... meer laten zien