How many letters does the top answer for “lack of an intervening or mediating agency” have?

The most common answer is immediacy (9 letters).

Crossword clue: lack of an intervening or mediating agency

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

immediacy 9 letters wn-def

lack of an intervening or mediating agency

immediateness 13 letters wn-def

lack of an intervening or mediating agency