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Use "difficultly" in a sentence
"Interestingly, the difficultly of transportation is driving more of the new middle class to the web."
"The current model of having clothing made in in the third world with several middlemen and huge profits is well established and anything new will be difficult - particularly when one has the difficultly of getting good measurements (unless you use a tailor or scanning booth, measurements by hand are not terribly accurate), a time gap of several weeks before you see the product, and a higher price."
"Incidentally, the actual article bearing the difficultly-worded headline is available here."