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Jyutping jin4 zi1 mou4 mat6
Pinyin yán zhī wú wù

Definitions (CC-CEDICT)
  1. (of a writing etc) to have no substance (idiom)
  2. to carry no weight
Definitions (粵典–words.hk)
  1. 語句
    形容​文章​或言論​空泛​,​冇​具體實​際​嘅​內​容
    (one's articles or comments) empty and vague
    • 言之無物嘅論點。
      言之无物嘅论点。
      jin4 zi1 mou4 mat6 ge3 leon6 dim2
      A vague argument.
Definitions (Wiktionary)
  1. phrase, idiomatic, of speech or writing
    to be devoid of substance; to be just empty verbiage
Definitions (Kaifangcidian)
  1. (沒有對應漢語詞彙)
Examples (Tatoeba—Mandarin-English)
  1. Mandarin
    他言之无物。
    他言之無物。
    tā yán zhī wú wù 。
    • There is no substance in his speech.
Examples (粵典–words.hk)
  1. Cantonese
    呢篇文章内容空洞,言之无物。
    呢篇文章內容空洞,言之無物。
    lei1 pin1 man4 zoeng1 noi6 jung4 hung1 dung6, jin1 zi1 mou4 mat6.
    • This passage is hollow. It's just empty verbiage.
  2. Cantonese
    言之无物嘅论点。
    言之無物嘅論點。
    jin4 zi1 mou4 mat6 ge3 leon6 dim2
    • A vague argument.