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[bat-ee] /ˈbæt i/
adjective, battier, battiest. Slang.
insane; crazy; eccentric.
Origin of batty
bat2 + -y1
Related forms
battiness, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for batty
Contemporary Examples
Historical Examples
  • The crowd laughed incredulously and said: "Poor fellow, he's batty."

    Think Col. Wm. C. Hunter
  • Indeed, I will at once compel Mr. batty to contradict the report which is afloat.

    Grace Darling Eva Hope
  • As he moved around inside setting things to rights, batty Carson held up a finger and winked.

    Travelers Five Along Life's Highway Annie Fellows Johnston
  • Either he's batty or else he's pretendin' to be, one or the other.

    Shavings Joseph C. Lincoln
  • He knew that in damp weather batty limped and confessed that his leg pained him a bit, from an old hurt he 'd had in the East.

    Never-Fail Blake Arthur Stringer
  • I had a batty idea that the next whiff of breeze would jar it loose.

    Shorty McCabe Sewell Ford
  • batty Smith was awarded one and a half year's imprisonment, and appealed against his sentence.

    The Escaping Club A. J. Evans
British Dictionary definitions for batty


adjective (slang) -tier, -tiest
insane; crazy
odd; eccentric
Word Origin
C20: from bat²; compare the phrase have bats in the belfry
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
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Word Origin and History for batty

1580s, "pertaining to bats," from bat (n.2) + -y (2). Slang sense "nuts, crazy" is attested from 1903, from the expression (to have) bats in (one's) belfry, also meaning "not be right in the head" (1899).

Online Etymology Dictionary, © 2010 Douglas Harper
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Slang definitions & phrases for batty



Crazy; nuts: He was grinning like he was bats/ funnier than you'd expect, fairly batty ( first form 1920+, second form 1900+)

Related Terms

have bats in one's belfry


Related Terms


The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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