The Latin root *fus* means "pour." This Latin root is the word origin of a good number of English vocabulary words, including [*fus*]ion, [*fus*]e, and con[*fus*]e. The root *fus* is easily recalled via the word re[*fus*]e, for to re[*fus*]e to do something asked of you is to "pour" the request right back to the person doing the requesting!