Good Luck

Meaning/Usage: Wishing someone well. Also can mean that it is not possible.

Explanation: The literal definition of wishing someone well is very literal. It is used very frequently in this way. However, another popular way this phrase is used is when you don't think a person can do something. The third sentence below is an example of this.

"Good luck on your interview tomorrow."
"I heard you're going to look for a new house, good luck."
"Good luck trying to find a better deal than this one."

A. "My son has his first baseball game tonight."
B. "Is he nervous?"
A. "He is actually very excited for it."
B. "Tell him we said good luck!"

Other Common Sentences

"I wish you the best."
"Hope you do well."