Forced; unnatural; insincere; hence, derisive, mocking, malignant, or bitterly sarcastic; -- applied only to a laugh, smile, or some facial semblance of gayety.

disdainfully or ironically humorous; scornful and mocking; "his rebellion is the bitter, sardonic laughter of all great satirists"- Frank Schoenberner; "a wry pleasure to be...reminded of all that one is missing"- Irwin Edman

Of, pertaining to, or resembling, a kind of linen made at Colchis.