Evil means assimilation of the superior by the inferior. Evil means a failure - Beethoven's nephew, who sponged at the expense of genius.
Diseases are evil, as is the action of bacteria.
Also death is evil. Thus the eating of meat is relatively evil. Mean is the embezzlement of life from something that is meant to serve the assimilation only to a limited extent. It is mean, because the greater portion is thus condemned to go the contrary way of useless devaluation. Thus the consumption of bird tongues, for which birds are killed, is meant mean, and relatively evil.