不遺 [－遗]

Jyutping bat1 wai4
Pinyin bù yí

Definitions (Wiktionary)
  1. verb, literary
    to not leave; to not abandon; to not leave out
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    他不遗余力帮助我。
    他不遺餘力幫助我。
    tā bù yí yú lì bāng zhù wǒ 。
    • He spared no pains to help me.
Examples (粵典–words.hk)
  1. Cantonese
    佢喺公益活动方面不遗余力。
    佢喺公益活動方面不遺餘力。
    keoi5 hai2 gung1 jik1 wut6 dung6 fong1 min6 bat1 wai4 jyu4 lik6.
    • He spares no effort in doing charity work.