ignis fatuus /igˈnis fatˈū-əs or fatˈŭ-ŭs/

1. Will-o'-the-wisp, the light produced by combustion of marsh-gas, which may lead a traveller into danger
2. Any delusive ideal or hope that may lead one astray

• sine wave
• sine waves
• sinewed
• sinewier
• sinewiest
• sinewing
• sinewless
• sinews
• sinews of war
• sinewy
• sinfonia
• sinfonia concertante
• sinfonias
• sinfonietta
• sinfoniettas
• sinful
• sinfully
• sinfulness
• sinfulnesses
• sing
• sing.
• singable
• singableness
• singablenesses
• sing along