費口舌 [费－－]

Jyutping fai3 hau2 sit6
Pinyin fèi kǒu shé

Definitions (CC-CEDICT)
  1. to argue needlessly
  2. to waste time explaining
Definitions (Wiktionary)
  1. verb, intransitive, verb-object
    to take a lot of talking and explaining; to argue needlessly
    (syn.) 磨喙舌