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Jyutping geoi1 sam1 po2 cak1
Pinyin jū xīn pǒ cè

Definitions (粵典–words.hk)
  1. 形容詞
    形容​一個​人​奸險​,​意圖​難以​預料
    with concealed intentions; with ulterior motives
    • 呢個人居心叵測,你都係小心啲佢好。
      呢个人居心叵测,你都系小心啲佢好。
      ni1 go3 jan4 geoi1 sam1 po2 caak1, nei5 dou1 hai6 siu2 sam1 di1 keoi5 hou2.
      You better be careful with that guy who has concealed intentions.
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)

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Jyutping geoi1 sam1 po2 caak1
Pinyin jū xīn pǒ cè

Definitions (CC-CEDICT)
  1. harboring unfathomable motives (idiom)
Definitions (粵典–words.hk)
  1. 形容詞
    形容​一個​人​奸險​,​意圖​難以​預料
    with concealed intentions; with ulterior motives
    • 呢個人居心叵測,你都係小心啲佢好。
      呢个人居心叵测,你都系小心啲佢好。
      ni1 go3 jan4 geoi1 sam1 po2 caak1, nei5 dou1 hai6 siu2 sam1 di1 keoi5 hou2.
      You better be careful with that guy who has concealed intentions.
Definitions (Wiktionary)
  1. phrase, idiomatic
    to harbor sinister intentions difficult to guess
Examples (粵典–words.hk)
  1. Cantonese
    呢个人居心叵测,你都系小心啲佢好。
    呢個人居心叵測,你都係小心啲佢好。
    ni1 go3 jan4 geoi1 sam1 po2 caak1, nei5 dou1 hai6 siu2 sam1 di1 keoi5 hou2.
    • You better be careful with that guy who has concealed intentions.
  2. Cantonese
    居心叵测
    居心叵測
    geoi1 sam1 po2 caak1
    • with concealed intentions; with ulterior motives
  3. Cantonese
    对于有居心叵测嘅人造谣,本会予以谴责。
    對於有居心叵測嘅人造謠,本會予以譴責。
    deoi3 jyu1 jau5 geoi1 sam1 po2 caak1 ge3 jan4 zou6 jiu4, bun2 wui2 jyu5 ji5 hin2 zaak3.
    • We (the Society/Association) condemn those rumour mongers with evil intentions.