Dictionary.com
Thesaurus.com
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:

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

And at last, we get the spectacle of Mullally unleashed as the apparently dotty, sort-of wheelchair-bound mom, lisping her way to glory.

From Los Angeles Times Oct. 6, 2023

A four-time Tony Award winner who brought humanity to larger-than-life characters, whether it be the dotty schoolteacher Miss Jean Brodie, an aging opera star Maria Callas or the betrayed, murderous Medea.

From Seattle Times Dec. 7, 2020

"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

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training