Another could be 'Twilight' (although it's more of a young adult novel with some adult readership). The characters are often seen as one - dimensional. Bella is overly dependent on Edward, and the relationship seems rather unhealthy and a bit too idealized in a rather unconvincing way. Also, the writing is not particularly sophisticated.
Some might consider 'The Bridges of Madison County' as a bad adult novel. The story, while aiming for a deep and passionate love story, can come across as overly sentimental. The characters' actions and the sudden and intense love affair they have in a short time seem rather unrealistic to many readers.
A colleague of mine had a meltdown during a meeting. He didn't like the new project plan and started shouting, slamming his fists on the table, and storming out of the room. It disrupted the whole meeting and made everyone feel uncomfortable. He later apologized, but the damage was done.
One criterion is the writing quality. If the prose is full of cliches, has a lot of grammar and spelling mistakes, and lacks a smooth flow, it can be considered a bad novel. For example, if an author overuses common phrases and doesn't bring any originality to the language, it makes the reading experience dull.
There was a story in the news about an adult who lost a bet. Instead of taking it gracefully, he threw a tantrum at the bar where they made the bet. He started breaking glasses and scaring other customers. The bar had to call the police to deal with him. It was a really extreme reaction just because he lost a bet.
I once saw a man in a restaurant who didn't get the table he wanted. He started yelling at the hostess, stomping his feet like a child. His face turned bright red and he was waving his arms around. It was so embarrassing.
One of the worst could be 'The Circle' by Dave Eggers. It presents a world where a powerful tech company has extreme control over people's lives. The characters lack depth and the plot is rather predictable, failing to fully explore the dystopian elements in an engaging way.
Some might consider 'Bloodsucking Fiends' by Christopher Moore to be among the worst. It tries too hard to be comical in its take on vampires. The humor can come across as forced and the plot is a bit all over the place. It doesn't really delve deep into the vampire mythology in a meaningful way like some other vampire novels do.
One of the worst modern novels could be 'Fifty Shades of Grey'. It has been criticized for its poor writing style, with simplistic prose and a rather weak plot that mainly revolves around an overly sexualized relationship. It lacks the depth and complexity that many expect from a good novel.
One of the worst could be 'School Days'. It has a very controversial plot that involves a lot of immoral and unethical relationships. The story development is often criticized for being too extreme and not in line with normal moral values, which makes many players uncomfortable.
One of the worst mystery novels could be 'The Mystery of the Generic Plot'. It has a very predictable storyline and flat characters. There's no real sense of suspense or intrigue. Everything unfolds in a very obvious manner, and the so - called 'twists' are things that you can see coming from a mile away.
A lot of people consider '50 Shades of Grey' among the worst. Despite its popularity, it promotes a rather distorted view of love and relationships. It blurs the lines between love and abuse with its dominant - submissive themes which are not what a healthy romantic relationship should be about.