Misdeed, n.
Etymology: [AS. misd. See Deed, n.]
An evil deed; a wicked action. Evils which our own misdeeds have wrought. Milton.
Syn. -- Misconduct; misdemeanor; fault; offense; trespass; transgression; crime.
Shades of meaning
Fernald has no entry of its own for misdeed; he lists it under sin.
Where he writes about it:
Sin in the generic sense, as denoting a state of heart, is synonymous with depravity; in the specific sense, as in the expression a sin, the term may be synonymous with transgression, crime, offense, misdeed, etc., or may denote some moral activity that could not be characterized by terms so positive. — from sin