This shows grade level based on the word's complexity.
lunatic
[ loo-nuh-tik ]
/ Ëlu nÉ tÉȘk /
Save This Word!
This shows grade level based on the word's complexity.
noun
(no longer in technical use; now considered offensive) an insane person.
a person whose actions and manner are marked by extreme eccentricity or recklessness.
a person legally declared to be of unsound mind and who therefore is not held capable or responsible before the law: a former legal term.
adjective Also lu·nat·i·cal [loo-nat-i-kuhl] /luËnĂŠt ÉȘ kÉl/ (for defs. 4, 5, 7).
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?
Origin of lunatic
OTHER WORDS FROM lunatic
lu·nat·i·cal·ly, adverbhalf-lu·na·tic, adjectiveWords nearby lunatic
lunar rainbow, lunar rover, lunarscape, lunar year, lunate, lunatic, lunatic asylum, lunatic fringe, lunation, lunch, lunchbox
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use lunatic in a sentence
British Dictionary definitions for lunatic
lunatic
/ (ËluËnÉtÉȘk) /
adjective Also (rarely): lunatical (luËËnĂŠtÉȘkÉl)
an archaic word for insane
foolish; eccentric; crazy
noun
a person who is insane
Derived forms of lunatic
lunatically, adverbWord Origin for lunatic
C13 (adj) via Old French from Late Latin lĆ«nÄticus crazy, moonstruck, from Latin lĆ«na moon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012