light-minded

US: (līt′mīn′did)

WordReference Random House Learner's Dictionary of American English © 2025

ˈlight-ˈmind•ed,  adj. 

1. frivolous;
   silly.

WordReference Random House Unabridged Dictionary of American English © 2025

light-mind•ed  (līt′mīn′did), adj. 

1. having or showing a lack of serious purpose, attitude, etc.;
   frivolous;
   trifling:
   to be in a light-minded mood.

• 1605–15

light′mind′ed•ly, adv. 
light′-mind′ed•ness, n.