How many letters does the top answer for “in a false and slanderous and defamatory manner; with slander or calumny” have?

The most common answer is calumniously (12 letters).

Crossword clue: in a false and slanderous and defamatory manner; with slander or calumny

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

calumniously 12 letters wn-def

in a false and slanderous and defamatory manner; with slander or calumny

slanderously 12 letters wn-def

in a false and slanderous and defamatory manner; with slander or calumny