Querulous – Adjective
Definition: complaining in a petulant or whining manner (http://www.oxforddictionaries.com/us/definition/american_english/querulous)
From “The Yellow Wallpaper” by Charlotte Perkins Gilman
Page 5 – 9th paragraph – “I don’t feel as if it was worthwhile to turn my hand over for anything, and I’m getting dreadfully fretful and querulous.”
In this sentence, querulous indicates that, the person is getting extremely distressed, becoming more like a complainer and grouchy.