Definition of Lunatic

1. Noun. An insane person.

Exact synonyms: Madman, Maniac
Specialized synonyms: Crazy, Looney, Loony, Nutcase, Weirdo, Bedlamite, Pyromaniac, Madwoman
Generic synonyms: Diseased Person, Sick Person, Sufferer
Derivative terms: Maniacal

2. Adjective. Insane and believed to be affected by the phases of the moon.
Exact synonyms: Moonstruck
Language type: Colloquialism
Similar to: Insane
Derivative terms: Lunacy, Lunacy

3. Noun. A reckless impetuous irresponsible person.
Exact synonyms: Daredevil, Harum-scarum, Hothead, Madcap, Swashbuckler
Generic synonyms: Adventurer, Venturer
Specialized synonyms: Tearaway
Derivative terms: Daredevil, Harum-scarum

Definition of Lunatic

1. a. Affected by lunacy; insane; mad.

2. n. A person affected by lunacy; an insane person, esp. one who has lucid intervals; a madman; a person of unsound mind.

Definition of Lunatic

1. an insane person [n -S]

Medical Definition of Lunatic

1. An obsolete term for a mentally ill person. Origin: see lunacy (05 Mar 2000)

Lexicographical Neighbors of Lunatic

lunar year
lunas
lunate
lunate
lunated
lunated
lunately
lunate bone
lunate bone
lunate cerebral sulcus
lunate dislocation
lunate fissure
lunate sulcus
lunate surface of acetabulum
lunatic (current term)
lunatic (current term)
lunatics
lunatic fringe
lunation
lunations
lunatomalacia
luna moth
lunch
lunchbox
lunchboxes
lunched
luncheon
luncheonette
luncheonettes
luncheons

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