經年累月 [经－－－]

Jyutping ging1 nin4 leoi4 jyut6
Pinyin jīng nián lěi yuè

Definitions (粵典–words.hk)
  1. 語句
    同日​積月累​，​但​時間​更長
    to accumulate after a long period of time

經年累月 [经－－－]

Jyutping ging1 nin4 leoi5 jyut6
Pinyin jīng nián lěi yuè

Definitions (CC-CEDICT)
  1. for years
  2. over the years
Examples (Wiktionary)
  1. Mandarin
    经年累月
    經年累月
    jīng nián lěi yuè
    • for years and years