1 : resulting from or characterized by whim or caprice in a manner that is awkward and lacking clarity; especially : lightly fanciful and full of disregard for it's own fancifulness
2 : a portmanteau of clumsy and whimsical
3 : a website dedicated to meanderings, lost fragments, the silly dreams of people and the dreams of silly people; a complete waste of time
clum·si·cal·i·ty\ˌkləm-zi-ˈka-lə-tē, ˌclum-\ noun
clum·si·cal·ly\ˈkləm-zi-k(ə-)lē, ˈclum-\ adverb
clum·si·cal·ness\-kəl-nəs\ noun