dotty

From Wiktionary

Word parts[change]

dot + -y (having many dots):

Pronunciation[change]

Adjective[change]

Positive
dotty

Comparative
dottier

Superlative
dottiest

  1. (UK) (informal) A dotty person is someone who is mildly insane or eccentric.
  2. If something is dotty, it has many dots.