How many letters does the top answer for “the act of calling down a curse that invokes evil” have?

The most common answer is imprecation (11 letters).

Crossword clue: the act of calling down a curse that invokes evil

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

imprecation 11 letters wn-def

the act of calling down a curse that invokes evil

malediction 11 letters wn-def

the act of calling down a curse that invokes evil