separate the men from the boys

phrase

: to show which people are really strong, brave, etc., and which are not
Now that the competition gets tough it will separate the men from the boys.

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“Separate the men from the boys.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/separate%20the%20men%20from%20the%20boys. Accessed 17 Mar. 2026.

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