lunatic
adjective/ˈluːnəˌtɪk/
Frequency rank: #8,312 most common English word
Meaning
a person who is mentally ill or wildly foolish

Example sentence
The crowd thought he was lunatic for trying to swim across the freezing river alone.
Synonyms & related words
Practice this word in the quiz
More words in ranks 8,301–8,400
- interceptionthe act of stopping or catching something before it reaches its intended destination.
- lagoona shallow body of water separated from the sea by a sandbank, reef, or barrier
- limpto walk unevenly due to injury or pain; an uneven, labored way of walking.
- linguisticsthe scientific study of language and its structure.
- logicallyin a way that follows clear and sound reasoning.
- lyricalExpressing deep personal emotions or feelings in a beautiful, song-like way.
- manifestationa visible or outward sign that something exists or is happening
- migrateto move from one region or country to another, especially seasonally or for better conditions.
- mildlyto a small degree; slightly; not severely
- miraculousSo extraordinary as to seem like a miracle; amazing and unexpected.