口慷慷 [－－－]

Jyutping hau2 hong1 hong1
Pinyin kǒu kāng kāng

Definitions (粵典–words.hk)
  1. 語句
    形容​一個​人淨​係​識​得​誇​誇其談​，​冇​任何​實際​行動​，​亦​都​唔​會​諗​下​要點​實現​自己​嘅​承​諾
    to make promises lightly, to speak without thinking through the consequences of what one is saying
    • 佢口慷慷話會投資一千萬，過咗成年咪又係一個仙都冇。
      佢口慷慷话会投资一千万，过咗成年咪又系一个仙都冇。
      He promised, rather lightly, of an investment of 10 million, yet not a cent came through after an entire year.

口慷慷 [－－－]

Jyutping hau2 hong2 hong2
Pinyin kǒu kāng kāng

Definitions (CC-CANTO)
  1. to describe when someone makes promises casually without considering about whether they are really going to keep them [colloquial]
Examples (粵典–words.hk)
  1. Cantonese
    佢口慷慷话会投资一千万，过咗成年咪又系一个仙都冇。
    佢口慷慷話會投資一千萬，過咗成年咪又係一個仙都冇。
    • He promised, rather lightly, of an investment of 10 million, yet not a cent came through after an entire year.