reduplicate
re.du.pli.cate \ri-'d(y)u:-pli-.ka-t, 're--\ \-k*t\ vt [LL reduplicatus, pp. of reduplicare, fr. L re- + duplicar]e to double - more at DUPLICATE 1: to make or perform again : COPY 2: to form (a word) by reduplication - re.du.pli.cate aj