adjective (1)
dot·​ty | \ ˈdä-tē How to pronounce dotty (audio) \
dottier; dottiest

Definition of dotty

 (Entry 1 of 2)

1a : mentally unbalanced : crazy
b : amiably eccentric a dotty old relative
2 : being obsessed or infatuated dotty fans
3 : amusingly absurd : ridiculous dotty traditions


adjective (2)

Definition of dotty (Entry 2 of 2)

: composed of or marked by dots

Other Words from dotty

Adjective (1)

dottily \ ˈdä-​tə-​lē How to pronounce dottily (audio) \ adverb
dottiness \ ˈdä-​tē-​nəs How to pronounce dottiness (audio) \ noun

First Known Use of dotty

Adjective (1)

15th century, in the meaning defined at sense 1a

Adjective (2)

1860, in the meaning defined above

History and Etymology for dotty

Adjective (1)

alteration of Scots dottle fool, from Middle English dotel, from doten

Keep scrolling for more

Learn More about dotty

Time Traveler for dotty

Time Traveler

The first known use of dotty was in the 15th century

See more words from the same century

Statistics for dotty

Cite this Entry

“Dotty.” The Dictionary, Merriam-Webster Inc., Accessed 19 January 2020.

More from Merriam-Webster on dotty

Thesaurus: All synonyms and antonyms for dotty

Rhyming Dictionary: Words that rhyme with dotty

Comments on dotty

What made you want to look up dotty? Please tell us where you read or heard it (including the quote, if possible).


to insert between existing elements

Get Word of the Day daily email!

Test Your Vocabulary

The Eponym Quiz

  • rubens painting
  • Which is the best synonym of bowdlerize?
Spell It

Can you spell these 10 commonly misspelled words?

Syn City

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!