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

• sparrowhawks
• sparrows
• sparry
• spars
• sparse
• sparsedly
• sparsely
• sparseness
• sparsenesses
• sparser
• sparsest
• sparsities
• sparsity
• spart
• Spartacist
• spartan
• spartans
• sparteine
• sparteines
• sparterie
• sparteries
• sparth
• sparthe
• sparthes
• sparths