rattlebrain

He was regarded as one of the most serious-minded youths, or perhaps the most serious-minded youth of the town, and always served as a mirror for the fathers of families, to hold up before their rattlebrain sons.

“I never did see such a rattlebrain.”

The rattlebrain'd fellow is not here, to talk us to death— He pass'd us on the road, singing & screaming, advising us to go back & learn hog latin- alias German- or dutch— We are now 41 miles from Pitt——

A poet is no rattlebrain, saying what comes uppermost, and, because he says everything, saying, at last, something good; but a heart in unison with his time and country.

You will think me a dreadful rattlebrain!