Neutral:
* The doctor suspected the patient was showing signs of lunatic behavior.
* The lunatic fringe of the political spectrum held beliefs far removed from reality.
Negative:
* The man's lunatic ramblings frightened the children.
* The lunatic on the bus was shouting obscenities at the passengers.
Figurative:
* She felt like a lunatic trying to explain her theory to her colleagues.
* The city's traffic was a lunatic frenzy during rush hour.
Historical:
* In the 18th century, people with mental illness were often labelled as lunatics and confined to asylums.
Important Note: While "lunatic" has been used historically to refer to people with mental illness, it is now considered offensive and outdated. Using it can be hurtful and disrespectful. Consider alternative words like "insane," "deranged," or "delusional" depending on the context.
Remember, always be mindful of the potential impact your words can have and choose them carefully.