We found one dictionary that defines the word lackbrained:

General (1 matching dictionary)

1. lackbrained: Wiktionary

Definitions from Wiktionary (lackbrained) ▸ adjective:  stupid; dim-witted ▸ Words similar to lackbrained ▸ Usage examples for lackbrained ▸ Idioms related to lackbrained ▸ Wikipedia articles (New!) ▸ Popular nouns described by lackbrained ▸ Words that often appear near lackbrained ▸ Rhymes of lackbrained ▸ Invented words related to lackbrained