How many letters does the top answer for “one who instigates or incites.” have?

The most common answer is incenser (8 letters).

Crossword clue: one who instigates or incites.

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

incenser 8 letters web-def

a substance that produces a fragrant odor when burned

one who instigates or incites. burke. 75% similar → instigator

one who eggs or incites. 50% similar → egger

one who exhorts or incites. 50% similar → exhorter