Synonyms for lunatic
- 1. lunatic, madman, maniac, sick person, diseased person, sufferer
- usage: an insane person
- 2. daredevil, madcap, hothead, swashbuckler, lunatic, harum-scarum, adventurer, venturer
- usage: a reckless impetuous irresponsible person
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- 1. lunatic, moonstruck, insane (vs. sane)
- usage: insane and believed to be affected by the phases of the moon