有頭威冇尾陣 (jau5 tau4 wai1 mou5 mei5 zan6) — start strong but finish weak in Cantonese
jauˏ₅有tauˎ₄頭waiˉ¹威mouˏ₅冇meiˏ₅尾zanˍ₆陣简 有头威冇尾阵
Mandarin Pinyin: you3 tou2 wei1 mao3 wei3 zhen4
Meaning of 有頭威冇尾陣
nounstart strong but finish weak
nounstarting strong at the beginning but not ending strong; to abort a mission halfway through