IRONIC

ironic, ironical

(adjective) 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”

dry, ironic, ironical, wry

(adjective) 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”

Source: WordNet® 3.1

Etymology

Adjective

ironic (comparative more ironic, superlative most ironic)

Characterized by or constituting (any kind of) irony.

Given to the use of irony; sarcastic.

Contrary or opposite to what may be expected.

(proscribed) Odd or coincidental; strange.

Usage notes

Some writers complain about an overuse of the word ironic to extend to situations which are remarkable for reasons other than irony - perhaps just coincidental or merely odd.