lengthiness
  冗長
  Length·i·ness, n. The state or quality of being lengthy; prolixity.
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  lengthiness
       n 1: amount or degree or range to which something extends; "the
            wire has an extension of 50 feet" [syn: extension, prolongation]
       2: the consequence of being lengthened in duration [syn: prolongation,
           continuation, protraction]