rattlebrained | sense examples, Usage and Definition from wordnet dictionary online

Adjective rattlebrained has 1 sense

rattlebrained, rattlepated, scatterbrained, scatty - lacking sense or discretion; "his rattlebrained crackpot ideas"; "how rattlepated I am! I've forgotten what I came for"- Glenway Westcott
Antonym: wise (indirect, via foolish)