名詞
一時之間錯誤嘅信念或者諗法,可以帶嚟嚴重後果 wrong belief or thought in a moment of weakness which could lead to serious consequences
佢殺人只係因為一念之差。
佢杀人只系因为一念之差。
keoi5 saat3 jan4 zi2 hai6 jan1 wai6 jat1 nim6 zi1 caa1. He murdered somebody just because of a wrong thought at a critical moment.
Definitions (Wiktionary)
phrase, idiomatic
the difference caused by a single thought; momentary slip; ill-considered action