How many letters does the top answer for “satisfactoriness by virtue of conforming to approved standards” have?

The most common answer is acceptability (13 letters).

Crossword clue: satisfactoriness by virtue of conforming to approved standards

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

acceptability 13 letters wn-def

satisfactoriness by virtue of conforming to approved standards

acceptableness 14 letters wn-def

satisfactoriness by virtue of conforming to approved standards

unsatisfactoriness by virtue of not conforming to approved standards 57% similar → unacceptability, unacceptableness