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See more synonyms for dotty on Thesaurus.com
adjective, dot·ti·er, dot·ti·est. Informal.
  1. crazy or eccentric.
  2. feeble or unsteady in gait.
  3. very enthusiastic or infatuated (usually followed by about or over).
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Origin of dotty1

1805–15; perhaps dott(ard) variant of dotard + -y1
Related formsdot·ti·ly, adverbdot·ti·ness, noun


adjective, dot·ti·er, dot·ti·est.
  1. marked with dots; dotted.
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Origin of dotty2

First recorded in 1805–15; dot1 + -y1
Related formsdot·ti·ness, noun


or Dot·ty

  1. a female given name, form of Dorothea and Dorothy.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for dotty

Contemporary Examples

Historical Examples

  • Dotty unrolled herself from the curtain with a triumphant smile.

  • Dotty tried to think there might be time enough, after all, to find the rings.

  • At the mention of rings, Dotty blushed, and stole a glance at Mrs. Allen.

  • Why, Dotty, I've excused you to Mrs. Pragoff, and it wouldn't be polite to go now.

  • Dotty, it seems, was feeling very much like a bitter-sour apple.

British Dictionary definitions for dotty


adjective -tier or -tiest
  1. slang, mainly British feeble-minded; slightly crazy
  2. British slang (foll by about) extremely fond (of)
  3. marked with dots
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Derived Formsdottily, adverbdottiness, noun

Word Origin

C19: from dot 1 : sense development of 1 from meaning of "unsteady on one's feet"
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 dotty


1812, "full of dots," from dot (n.) + -y (2). Meaning "silly" is from c.1400, in dotypolle "dotty poll" (i.e. "dotty head"), in which case the first element is from dote (v.).

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Online Etymology Dictionary, © 2010 Douglas Harper