D defs.my
Entry 3 senses · 2 variants Webster, 1913

Lunatic

/lo͞on'-ət-ĭkˌ/ · Lu·na·tic · IPA /ˈluːnətɪk/
01 a. Affected by lunacy; insane; mad; crazy; demented.
  1. 1.
    Affected by lunacy; insane; mad; crazy; demented.
    “Lord, have mercy on my son; for he is lunatic.” — Wyclif (Matt. xvii. 15).
  2. 2.
    Of or pertaining to, or suitable for, an insane person; evincing lunacy; as, lunatic gibberish; a lunatic asylum.
02 n. A person affected by lunacy; an insane person, esp. one who has lucid intervals; a madman; a person of unsound mind.
  1. 1.
    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.” Shak.