Bstare

2 clues
Sign of an absent mind
Uncomprehending response
Similar answers:
Aare
Aareaditalaeaer
Aasinare
Abare
Aberdare
Ablare
Abstain
Abstained
Abstainers
Abstainfromfood
Abstaining
Abstains
Abstemious
Abstentions
Absthe
Abstinence
Abstinent
Abstinentminded
Abstract
Abstractalgebra