The phrase "awful chapter" is correct and usable in written English.
It can be used to describe a section of a book or narrative that is particularly unpleasant, poorly written, or difficult to read.
Example: "After reading the awful chapter, I almost put the book down for good."
Alternatives: "terrible section" or "dreadful part".
We call on President Obama to fulfil his promise and end this awful chapter in US history.
Read Morgan for cohesive momentum and plot, and you'll be disheartened (don't get me started on this novel's awful chapter on a rampaging circus elephant).
Her asocial persona even wears a faint halo of autism: the idiot savant obsessed with repetition and feats of arithmetic (the first and least awful chapter of the book is called "Numbers").
Although the military has made substantial gains in recent days, analysts warned that battles in the big cities could represent an entirely different and awful chapter, involving dangerous urban warfare and potentially high numbers of civilian casualties.
When the case closed with a settlement, sealed testimony and a nondisclosure agreement, I thought that finally ― finally ― I could get on with my life, that this awful chapter in my life was over at last.
That a white 21-year-old named Dylann Storm Roof allegedly walked into the church's Bible study and gunned down nine of its black parishioners, including State Senator Rev. Clementa Pinckney and the 87-year-old Susie Jackson, seemed like just the latest awful chapter in a long history of violence against people of colour in my home state.
In Mr. Miller's apt words, the play deals with "one of the strangest and most awful chapters in human history". Though the basic events are true, one always greets them with incredulity.
Freeman's Journal and Daily Commercial Advertiser of Dublin noted that what it called "one of the most sensational and awful chapters in the annals of human wickedness" had resulted in the press "teem[ing] with descriptions and details of the ghastly horrors of that crime".
His most powerful chapter reveals the awful scale of "the great thinning".
It may help to nudge the history books and remind ourselves that this is not some awful novelty but the latest chapter in a very old story.
Another chapter in a god-awful war.
