plural stumbling blocks
: something that stops you from doing what you want to do
Lack of funds is a major stumbling block to the project.
My plans hit a stumbling block.
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“Stumbling block.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/stumbling%20block. Accessed 21 Jun. 2026.
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