adjective Also lu·nat·i·cal [loo-nat-i-kuh l] /luˈnæt ɪ kəl/ (for defs 4, 5, 7).
Origin of lunatic
Related formslu·nat·i·cal·ly, adverbhalf-lu·na·tic, adjective
Examples from the Web for lunatic
Fine, but there are lunatic sums of money being spent on art, surely?William, Kate, and Jay Z’s Favorite Art Star: Alexander Gilkes' World of Rock Stars and Royalty|Tim Teeman|December 10, 2014|DAILY BEAST
“I saw a lunatic, simply stated,” the victim, a contractor from nearby Bristol, told police.
Everyone on the sidewalk looked at her like she was a lunatic, but she didn't care—she wanted that part.New York’s Greatest Show Or How They Did Not Screw Up ‘Guys and Dolls’|Ross Wetzsteon|April 6, 2014|DAILY BEAST
There is only one word which I loathe more than I do lunatic and that word is crazy.
If Hawberk knew how I loathe that word “lunatic,” he would never use it in my presence.
And the Countess had to surrender, with an implication that it was the only course open in dealing with a lunatic.When Ghost Meets Ghost|William Frend De Morgan
The Earl of Salisbury judged it to be the effusion of a lunatic, but thought it well, nevertheless, to communicate it to the king.What was the Gunpowder Plot?|John Gerard
Which of her censors would be wholly unmoved if his room were invaded by a lunatic?Shakespearean Tragedy|A. C. Bradley
He is now himself called a lunatic, and on returning home behaves as if he were half-crazed.The Belief in Immortality and the Worship of the Dead, Volume I (of 3)|Sir James George Frazer
Possibly this person was a lunatic, whose keeper had been drowned in the Conway Castle.Willing to Die|Joseph Sheridan Le Fanu