Antonyms of adj sisyphean

1 of 2 senses of sisyphean

Sense 2
Sisyphean -- (both extremely effortful and futile)

INDIRECT (VIA effortful) -> effortless -- (requiring or apparently requiring no effort; "the swallows glided in an effortless way through the busy air")

Similarity of adj sisyphean

2 senses of sisyphean

Sense 1
Sisyphean -- (of or relating to Sisyphus)

Sense 2
Sisyphean -- (both extremely effortful and futile)
       => effortful (vs. effortless) -- (requiring great physical effort)