1
[ adjective ] lacking sense or discretion

Examples

"his rattlebrained crackpot ideas" "how rattlepated I am! I've forgotten what I came for"- Glenway Westcott

Related terms

foolish

2
[ adjective ] lost in thought; showing preoccupation

Examples

"an absent stare" "an absentminded professor" "the scatty glancing quality of a hyperactive but unfocused intelligence"

Related terms

inattentive

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