maddish

adj

1. Somewhat mad.

   “1642, Thomas Morton, The Presentment of a Schismaticke, London: R. Whitaker & S. Brown, p. 6, I have reserved for the last place a Character which maketh his case most desperate, called by Auusten maddish obstinacy […]”

   “1815, Charles Lamb, letter to William Wordsworth dated 28 April, 1815, in The Letters of Charles Lamb, Boston: The Bibliophile Society, 1905, Volume 4, p. 39, Excuse this maddish letter: I am too tired to write in forma.”

   “He is small and thin, and has glasses and large teeth and the maddish smile of genuine intellectual passion.”