Why this word is great
DEVILTRY — [Noun] Reckless, wicked, or mischievous behavior, often of a supernatural or diabolical character. A variant (late 18th century) of 'devilry', from Middle English 'develrye', from 'devil' (evil spirit, the Devil) + the suffix '-ry' (denoting condition, practice, or art). Unlike “mischief,” with its boyish pranks and diluted malice, or “gallantry,” the chivalric ideal whose suffix it inverts, deviltry is a conscious covenant with the forbidden. It is the sulfurous scent after a pact is signed in shadow, the cold, precise logic of a trap set for spectacle, or the deliberate flaw woven by a weaver’s cursed needle—a testament to malice that grins with the purity of inventive sport.