無以復加 [无－复－]

Jyutping mou4 ji5 fuk6 gaa1
Pinyin wú yǐ fù jiā

Definitions (CC-CEDICT)
  1. in the extreme (idiom)
  2. incapable of further increase
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. phrase, idiomatic
    in the extreme; could be no more