How many letters does the top answer for “the quality of being important and worthy of note” have?

The most common answer is importance (10 letters).

Crossword clue: the quality of being important and worthy of note

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

importance 10 letters wn-def

the quality of being important and worthy of note

the quality of not being important or worthy of note 83% similar → unimportance

the quality of being worthy of being quoted 50% similar → quotability

the quality of being worthy of praise 50% similar → laudability, laudableness, praiseworthiness