All bark but no spark?

All bark but no spark

The meaning is –This is a twist on the more common idiom “all bark and no bite,” but if used, "all bark but no spark" could describe someone who talks a lot or makes noise but lacks energy, passion, or follow-through—especially in relationships or action.

Similar idioms –

• All talk and no action

• Talks a big game

Examples

1. He flirts a lot, but when it comes to love, he’s all bark but no spark.

2. The performance was loud and flashy, but honestly, all bark but no spark.

中文意思是 – 只是說說而已，沒有激情或實際行動 / 只是说说而已，没有激情或实际行动