doting
dotish
feeble-minded
foolish
idiotic
colour-blind
contemptible
crackbrained
credulous
deaf
decrepid
delude
dodder
empty-headed
fallible
flighty
foolhardy
fractious
gullible
headstrong
hot-headed
imprudent
knavish
myopic
pointless
presumptuous
purse-proud
scrofulous
unwarlike
weak-willed