Source : Webster's Revised Unabridged Dictionary (1913)

Ironic \I*ron"ic\, a.
   Ironical. --Sir T. Herbert.

Source : WordNet®

ironic
     adj 1: humorously sarcastic or mocking; "dry humor"; "an ironic
            remark often conveys an intended meaning obliquely";
            "an ironic novel"; "an ironical smile"; "with a wry
            Scottish wit" [syn: {dry}, {ironical}, {wry}]
     2: characterized by often poignant difference or incongruity
        between what is expected and what actually is; "madness,
        an ironic fate for such a clear thinker"; "it was ironical
        that the well-planned scheme failed so completely" [syn: {ironical}]