D defs.my
Entry 1 sense Webster, 1913

Sisyphean

/sīs'əfēʹən/ · Sis·y·phe·an · IPA /ˌsɪsəˈfiːən/
01 a. Relating to Sisyphus; incessantly recurring; as, Sisyphean labors.
  1. 1.
    Relating to Sisyphus; incessantly recurring; as, Sisyphean labors.