lunatic

adjective/ˈluːnəˌtɪk/

Frequency rank: #8,312 of 20,003 in the WORDED list (wordfreq data)

Meaning

a person who is mentally ill or wildly foolish

Illustration for the English word “lunatic”

Example sentence

The crowd treated him like a dangerous lunatic when he tried to swim the freezing river alone.

Synonyms & related words

More words in ranks 8,301–8,400