tall order
noun
informal
: something that is very difficult to do
Getting the project done on schedule is going to be a tall order.
That's a tall order to fill.
Cite this Entry
“Tall order.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tall%20order. Accessed 1 Aug. 2026.
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