The most appropriate meaning of the idiom "chicken-hearted" is >cowardly.<
It is used to describe someone who is afraid or scared, especially of doing something dangerous or difficult. It is often used in a derogatory way, to suggest that someone is not brave or courageous.
The other options are not correct.
- Generous: This does not mean cowardly.
- Selfish: This does not mean cowardly.
- Miserly: This does not mean cowardly.
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