overmultiply

overmultiply

(ˌəʊvəˈmʌltɪˌplaɪ)
vb (tr) , -plies, -plying or -plied
to increase too much or too often
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014