Adjective
-
lost in thought
showing preoccupation
"an absent stare"
"an absentminded professor"
"the scatty glancing quality of a hyperactive but unfocused intelligence"
-
lacking sense or discretion
"his rattlebrained crackpot ideas"
"how rattlepated I am! I've forgotten what I came for"- Glenway Westcott
- rattlepated