積鬱 [积郁]

Jyutping zik1 wat1
Pinyin jī yù

Definitions (CC-CEDICT)
  1. (of gloomy thoughts etc) to smolder; to accumulate in one's mind
  2. accumulated anxiety
Definitions (Wiktionary)
  1. verb
    to accumulate in the mind (of worries, resentment, etc.)
  2. noun
    negative feelings; pent-up frustrations that have long accumulated in the mind