manyfold
man y fold |ˈmenēˌfōld ˈmɛnifoʊld | ▶adverb by many times: the problems would be multiplied manyfold. ▶adjective involving multiplication by many times: the manyfold increase in staffing levels.
many |fold |ˈmɛnɪfəʊld | ▶adverb by many times: the problems would be multiplied manyfold.