大細路 [－细－]

Jyutping daai6 sai3 lou6
Pinyin dà xì lù

Definitions (CC-CANTO)
  1. kidult
Definitions (粵典–words.hk)
  1. 名詞
    年紀​比​較​大​但​係​性情​、​心境​依然​好似​細路​噉​冇​長​大​過​嘅​人​（​量​詞​：​個​）
    older person who is young at heart; literally "big child"
Definitions (Wiktionary)
  1. noun, Cantonese
    older person who is young at heart; kidult