scatterbrained

(s) lacking sense or discretion
- his rattlebrained crackpot ideas
- how rattlepated I am! I've forgotten what I came for - Glenway Westcott
rattlebrained, rattlepated, scatty,
(s) guided by whim and fancy
- flighty young girls
flighty, flyaway, head-in-the-clouds,

Synonyms

rattlebrained rattlepated scatty flighty flyaway head-in-the-clouds

Words of close approximity