Definify.com

Webster 1913 Edition

Adj.

[F.

lunatique

, L.

lunaticus

, fr.

luna

the moon. See

Affected by lunacy; insane; mad; crazy; demented.

Lord, have mercy on my son; for he is

lunatic

Wyclif (Matt. xvii. 15).

Of or pertaining to, or suitable for, an insane person; evincing lunacy;

as,

lunatic

gibberish; a

lunatic

asylum.

Noun.

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

The

lunatic

, the lover, and the poet,
Are of imagination all compact.

Shakespeare

Adj.

Affected by a species of madness, supposed to be influenced by the moon.

Noun.

A person affected by insanity, supposed to be influenced or produced by the moon, or by its position in its orbit; a madman.