滴滴答答 [－－－－]

Jyutping dik1 dik1 daap3 daap3
Pinyin dī dī dā dā

Definitions (Wiktionary)
  1. adj, onomatopoeic
    ticktock; pitapat; to fall in drops; to drip
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）