聲大夾冇準 [声－夹－准]

Jyutping seng1 daai6 gaap3 mou5 zeon2
Pinyin shēng dà jiā mǎo zhǔn

Definitions (CC-CANTO)
  1. Describes a person who speaks loudly (normally in an argument) but does not really have a point; full of hot air
Definitions (粵典–words.hk)
  1. 語句
    講​嘢​大聲​但​係​內容​有​錯
    to speak loudly but say incorrect things; to talk loudly and talk drivel or nonsense