Batty

25 clues
Mad
Daft
Loco
Nuts
Loony
Crazy
Balmy
Nutso
Cuckoo
Fruity
Insane
Bananas
Cracked
Bonkers
Crackers
Eccentric
Pixilated
Quite daft
Off the wall
Chiropterous
Totally bonkers
Around the bend
Off one's rocker
Off one's trolley
Nutty as a fruitcake
Similar answers:
Aaaball
Aaabattery
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Abaa
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Ababinreelandr
Ababy
Ababys
Abac
Abaca
Abacab
Abacas