老掉牙 [－－－]

Jyutping lou5 diu6 ngaa4
Pinyin lǎo diào yá

Definitions (CC-CEDICT)
  1. very old
  2. obsolete
  3. out of date
Definitions (Wiktionary)
  1. adj, idiomatic
    old; old-fashioned; stale; clichéd
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）