How many letters does the top answer for “a charm; an incantation; a shell; a trick; adroit mischief.” have?

The most common answer is cantrap (7 letters).

Crossword clue: a charm; an incantation; a shell; a trick; adroit mischief.

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

cantrap 7 letters web-def

A charm; an incantation; a shell; a trick; adroit mischief. [Written also cantraip.] [Scot.]

cantrip 7 letters web-def

A charm; an incantation; a shell; a trick; adroit mischief. [Written also cantraip.] [Scot.]