batty

UK: /ˈbæti/ US: /ˈbæti/ ,(bat′ē)

Inflections of 'batty' (adj):

battier

adj comparative

battiest

adj superlative

WordReference Random House Learner's Dictionary of American English © 2026

bat•ty /ˈbæti/   adj., -ti•er, -ti•est. 

1. Slang Terms crazy:
   a real batty idea.

bat•ti•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2026

bat•ty  (bat′ē), adj., -ti•er, -ti•est. [Slang.]

1. Slang Terms insane;
   crazy;
   eccentric.

• bat² + -y¹

bat′ti•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

batty / ˈbætɪ/ adjective ( -tier, -tiest)

1. odd; eccentric: my batty relatives
2. irrational; mad: the noise drives me batty

Etymology: 20th Century: from bat²; compare the phrase have bats in the belfry