Here's a breakdown of what each part means:
* Psychoneurosis: This term refers to mental health conditions characterized by anxiety, depression, and other emotional disturbances, but without serious personality disintegration. It's an outdated term, replaced by more specific diagnoses like anxiety disorders, depression, and obsessive-compulsive disorder.
* -ly: This suffix indicates a manner or quality, so "psychoneurotically" would imply a manner of behavior or thinking that is consistent with psychoneurosis.
Therefore, using "psychoneurotically" in modern contexts would be considered outdated and possibly even offensive, as it suggests an outdated and overly simplistic understanding of mental health.
If you're looking for a way to describe someone's behavior as being influenced by mental health challenges, it's best to use more specific and appropriate terms.