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Jyutping ci4 deon6
Pinyin chí dùn

Definitions (CC-CEDICT)
  1. slow in one's reactions
  2. sluggish (in movement or thought)
Definitions (粵典–words.hk)
  1. 形容詞
    對​事物​嘅​反​應​好​慢​,​捉​唔​著​時機​,​經常​被​人​超越
    slow; sluggish; dull; obtuse
    • 反應遲鈍
      反应迟钝
      faan2 jing3 ci4 deon6
      slow in reacting
Definitions (Wiktionary)
  1. adj
    retarded; obtuse; dim-witted
    (syn.) 愚笨, 痴呆, 愚鈍, 臭笨, 撚樣, 混钝, 鳩拙, 愚戇, 阿西, 拙笨, 袋屎袋尿, 鱟, 笨, 撚样, 棒槌, 发踱, 發踱, 愚昧, 笨拙, 笨车车, 愚钝, 呆痴, 混鈍, 拙, 鸠拙, 𡳞面, 袋屎, 蠢气, 海鲎, 呆傻, 笨車車, 𡳞鳥面, 蠢氣, 海鱟, 愚戆, 𡳞鸟面, 愚蠢, 暗昧, 呆
  2. adj, of reaction
    slow
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (粵典–words.hk)
  1. Cantonese
    反应迟钝
    反應遲鈍
    faan2 jing3 ci4 deon6
    • slow in reacting
  2. Cantonese
    食完硬糖,成个口成浸糖味,好似味觉迟钝咗咁。
    食完硬糖,成個口成浸糖味,好似味覺遲鈍咗咁。
    sik6 jyun4 ngaang6 tong2, sing4 go3 hau2 sing4 zam6 tong2 mei6, hou2 ci5 mei6 gok3 ci4 deon6 zo2 gam2.
    • I feel that my tastebuds are paralysed after I ate some boiled sweets, that sweet feeling stays in my mouth and wouldn't go.