Kenneth G. Wilson (1923). The Columbia Guide to Standard American English. 1993.
IRONY (n.)
is specifically the use of language to mean something quite opposite from what the words literally say. Irony is usually either sardonic or humorous in intent: She looked out at the rain and fog and said, What a lovely day for a picnic! Things ironic are not what they at first appear. Irony can be a two-edged sword: if your hearers or readers miss or misinterpret it, youre worse off than if youd never tried it. Compare BURLESQUE; SATIRE. See also BLACK HUMOR; SICK HUMOR.