Synonyms:
sardonic
Meaning: 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
Usage examples
Lastly, he stared wild-eyed at the sardonic Captain Blood.
Grim shadows diapered the snow; the air was strangely mild; The valley's girth was dumb with mirth, the laughter of the wild; The still, sardonic laughter of an ogre o'er a child.