continuously cruel or fierce;merciless
"grim determination"
"grim necessity"
"Russia's final hour, it seemed, approached with inexorable certainty"
"relentless persecution"
"the stern demands of parenthood"
"the relentless beat of the drums"
Mrs Nwuke hated her with a relentless hatred.
出自: C. Ekwensi
Forgive me..if I seem a bit relentless in my questions.
出自: A. Cross