whammy

1 a spoken word or set of words believed to have magic power if you tell anyone about this, I swear I'll put the whammy on you Synonyms abracadabra, bewitchment, charm, conjuration, enchantment, glamour (also glamor), hex, incantation, invocation, spellRelated Words cantrip [chiefly Scottish], curse, jinx; bewitchery, conjuring, magic, mojo, necromancy, sorcery, voodoo, voodooism, witchcraft, witchery, wizardry; amulet, charm, fetish (also fetich), phylactery, talisman

2 something that brings bad luck put the whammy on herself by publicly predicting that she would win the tennis tournament Synonyms hex, hoodoo, Indian sign [chiefly British], jinxRelated Words Jonah; curse, evil eye, pox, spell, voodoo; augury, omen, portentNear Antonyms amulet, charm, fetish (also fetich), talisman