How many letters does the top answer for “the quality of requiring little effort” have?

The most common answer is effortlessness (14 letters).

Crossword clue: the quality of requiring little effort

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

effortlessness 14 letters wn-def

the quality of requiring little effort

requiring little mental effort 60% similar → mindless

the quality of requiring deliberate effort 60% similar → effortfulness

the quality of requiring extended effort 60% similar → laboriousness, operoseness, toilsomeness