General terms:
* Pessimist: This is a common term for someone who always expects the worst.
* Cynic: This term implies a distrust of others and their motives.
* Negative Nancy/Negative Nelly: These are informal terms, often used humorously, for someone who is always complaining or finding fault.
* Debbie Downer: This is a popular term for someone who brings down the mood of a group.
More specific terms:
* Grump: This term suggests a chronically bad mood.
* Complainer: This term highlights someone who constantly expresses dissatisfaction.
* Faultfinder: This term emphasizes someone who constantly points out flaws.
* Sceptic: This term implies a lack of belief or trust, often in a rational way.
It's important to remember:
* These terms can be subjective and should be used with caution.
* A person's negativity might be a symptom of a larger issue like depression or anxiety.
Instead of labeling someone with a negative attitude, it's often more helpful to understand the underlying reasons for their behavior.