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Synonyms

dotty

1 American  
[dot-ee] / ˈdɒt i /

adjective

Informal.
dottier, dottiest
  1. crazy or eccentric.

  2. feeble or unsteady in gait.

  3. very enthusiastic or infatuated (usually followed by about orover ).


dotty 2 American  
[dot-ee] / ˈdɒt i /

adjective

dottier, dottiest
  1. marked with dots; dotted.


dotty British  
/ ˈdɒtɪ /

adjective

  1. slang feeble-minded; slightly crazy

  2. slang (foll by about) extremely fond (of)

  3. marked with dots

"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

Other Word Forms

Etymology

Origin of dotty1

1805–15; perhaps dott(ard) variant of dotard + -y 1

Origin of dotty2

First recorded in 1805–15; dot 1 + -y 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The dotty pumpkins and kaleidoscope rooms of Yayoi Kusama, who has died aged 97, were as vibrant as the artist herself, but her exuberant work was the expression of a long battle with mental illness.

From Barron's Aug. 27, 2026

Lise has run-ins with other passengers aboard her flight and, once at her destination, befriends a bumbling, dotty widow.

From The Wall Street Journal Jan. 23, 2026

Then, in 2024, he had to have the dotty idea to throw himself into contention for the vice presidency.

From Slate Jan. 10, 2026

"So far I've played this dotty little Welsh woman. They'll just see me as a little bit clueless," local government officer Fiona, 62, from Swansea, admitted.

From BBC Jan. 6, 2026

"I won't be able to talk to you much once we're in the Dining-Room. If I do, people will think I'm dotty and talking to myself."

From "The Witches" by Roald Dahl

He has, however, replaced it with one that is, if anything, even dottier.

From The Guardian Aug. 10, 2011

The whole idea – driven, apparently, by the need to get more southern bums on northern seats to fulfil contract pledges – couldn't be dottier.

From The Guardian Jul. 24, 2010

When Heartbreak House was presented last week under Welles's direction and with himself in the leading role of 88-year-old Captain Shotover, even the dottiest Mercury fan could not help having qualms.

From Time Magazine Archive

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