brainsick

From brain +‎ sick.

brainsick (comparative more brainsick, superlative most brainsick)

1. Disordered in the understanding; giddy; thoughtless.
   • 1591 (date written), William Shakespeare, “The First Part of Henry the Sixt”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act IV, scene i]:

     Good Lord, what madness rules in brainsick men,
     When for so slight and frivolous a cause
     Such factious emulations shall arise!

   • 1594, Christopher Marlow[e], The Troublesome Raigne and Lamentable Death of Edward the Second, King of England: […], London: […] [Eliot’s Court Press] for Henry Bell, […], published 1622, →OCLC, (please specify the page):

     Come vnckle, let vs leaue the brainsick king,
     And henceforth parle with our naked swords.

• brainsickly
• brainsickness