No definitions found for 'dumbhead'
Perhaps one of these:
dumped,
down pat,
damped,
dumb-waiter,
demephitize,
down feather,
dum fuit infra aetate,
dump truck,
demephitization,
dom pedro,
dumbwaiter,
dumpty,
demephitizing,
dumbed down,
don budge,
demephitized,
dinaphthyl,
dumb-bidding,
dumb terminal,
downbeat