To be in a situation that is difficult to resolve.(adjective)
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Use "hard put" in a sentence
"Twilight still infused the sky with a subtle afterglow because the weather was fine; Richard walked so swiftly that Willy Insell was hard put to keep up with him, the rage in him growing with every step he took."
"Dwarf-mail may be good, but they will soon be hard put to it."
"If we had to choose between Napoleon, in the shape of Ben Cooley, or Lenin, in the lack – of – shape of Willie Struthers, we should be hard put to it to know which was worse."