And in a leading article of the "Trumpet," Keck characterized Ladislaw’s speech at a Reform meeting as "the violence of an energumen—a miserable effort to shroud in the brilliancy of fireworks the daring of irresponsible statements and the poverty of a knowledge which was of the cheapest and most recent description."
There are no more uses of "irresponsible" in the book.
Show samples from other sources
After much passing around of money Cousin Joshua was moved across the tracks and placed in state accommodations for the irresponsible, where he remained for the rest of his days.
Harper Lee -- Go Set a Watchman
"The fact of the matter is, we’ve been irresponsible," Marybeth continues.