How many letters does the top answer for “the quality of being particular and pertaining to a specific case or instance” have?

The most common answer is particularity (13 letters).

Crossword clue: the quality of being particular and pertaining to a specific case or instance

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

particularity 13 letters wn-def

the quality of being particular and pertaining to a specific case or instance

specialness 11 letters wn-def

the quality of being particular and pertaining to a specific case or instance