very drunk; so drunk as to be unconscious or not know what one is doing.
Origin of blotto
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for blotto
Historical Examples of blotto
We ceased to think there was any harm in being occasionally "blotto" at night, or in employing the picturesque army word "bloody."Tell England
slang unconscious, esp through drunkenness
Word Origin for blotto
C20: from blot 1 (vb); compare blot out
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
"drunk," c.1905, from some signification of blot (v.) in its "soak up liquid" meaning.
Online Etymology Dictionary, © 2010 Douglas Harper