Meaning: This idiom is used to describe experiencing sudden nervousness, hesitation, or fear, especially before carrying out a planned action or undertaking a significant decision. It implies feeling apprehensive or doubtful about proceeding with something that was previously agreed upon or planned.

Usage in Example Sentences:

1. “He was all set to propose, but he got cold feet at the last moment and backed out.”
2. “They were excited about starting their own business, but they got cold feet when they realized the risks involved.”
3. “She had been looking forward to the trip, but she got cold feet when she saw the storm approaching.”

Origin: The origin of the idiom “get cold feet” is uncertain, but it likely originated from literal sensations of coldness in the feet being associated with fear or anxiety. Over time, the phrase evolved into a metaphorical expression used to describe feelings of nervousness or hesitation before taking action. It emphasizes the sudden onset of doubt or apprehension that may cause someone to reconsider or back out of a planned course of action.