The stereotypical laughter produced by a villain, frequently represented as muahahaha or bwahaha.

Parodying an ostentatious expression of evilness in online written forums such as chat rooms.

Having evil thoughts or intentions.

(idiomatic) A duplicate or counterpart that acts in a contrary, nefarious, or insidious manner.

(obsolete) tetanus in the jaw of a horse

(obsolete) Phthiriasis.

(idiomatic) An unfavorable thing that must be done or accepted, especially because the available alternative courses of action or inaction would be worse.

(archaic, euphemistic) Prostitution.

Misspelling of medieval.

(obsolete) A swelling in the genitals of horses. / (obsolete, by extension) Priapism.