Antonyms of noun effortfulness

1 sense of effortfulness

Sense 1
effortfulness -- (the quality of requiring deliberate effort)
       Antonym of effortlessness (Sense 1)
      => effortlessness -- (the quality of requiring little effort; "such effortlessness is achieved only after hours of practice")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun effortfulness

1 sense of effortfulness

Sense 1
effortfulness -- (the quality of requiring deliberate effort)
       => difficulty, difficultness -- (the quality of being difficult; "they agreed about the difficulty of the climb")