Answer: dafter

AnswerCrossword Clue
DAFTERLess sane
dafterfoolish
dafterDAFT, insane (mentally unsound)
daftercrazy
DAFTERMore nutty
DAFTERMore mad
DAFTERNot as sensible
DAFTERMore bats
DAFTERMore cracked
DAFTERBattier, in Britain
DAFTERMore nuts
DAFTERMore meshuga
DAFTERMore bananas
DAFTERLess sensible
DAFTERLess rational
DAFTERMore senseless
DAFTERMore foolish