Ha

Ha Ha (h[aum]), interj. [AS.] An exclamation denoting surprise, joy, or grief. Both as uttered and as written, it expresses a great variety of emotions, determined by the tone or the context. When repeated, ha, ha, it is an expression of laughter, satisfaction, or triumph, sometimes of derisive laughter; or sometimes it is equivalent to ``Well, it is so.'' [1913 Webster]

Ha-has, and inarticulate hootings of satirical rebuke. --Carlyle. [1913 Webster]