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Use "lengthiness" in a sentence
"MN Besides the importance of purely technical aspects, the lengthiness of the voyages suggested the need to take care of the small details that would make life aboard more comfortable."
"But let's face it: hobbies (whether it be MMORPGs, geocaching, larp, costume-making or tinkering with electronics) become more interesting when they are challenging and complicated. (cut for lengthiness)"
"Argh, I have so much to recount, and am so behind, and have been so busy...so I apologise in advance for the potential lengthiness of the next few posts, and/or the fact that they might appear in quick succession."