凉半截

Traditional (Taiwan): 涼半截

liángbànjié ㄌㄧㄤˊ ㄅㄢˋ ㄐㄧㄝˊ

    • to feel suddenly disheartened
    • to have one's spirits dampened

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
half cool through
Meaning
To feel suddenly discouraged and disheartened after something goes badly.

Sources