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British Dictionary definitions for doolally

doolally

adjective
  1. slang out of one's mind; crazyIn full: doolally tap

Word Origin

C19: originally military slang, from Deolali, a town near Mumbai, the location of a military sanatorium + Hindustani tap fever
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for doolally

adj.

"insane, eccentric," British slang, by 1917 in the armed services and in full doolally tap (with Urdu word for "fever"), from Deolali, near Bombay, India, which was a military camp (established 1861) with a large barracks and a chief staging point for British troops on their way to or from India; the reference is to men whose enlistments had expired who waited there impatiently for transport home.

Online Etymology Dictionary, © 2010 Douglas Harper