In fuse is a common English phrase used to describe the act of permeating or saturating a substance with another substance, or to embed a concept or idea deeply within a person or group. There are a number of synonyms for in fuse that can be used to express similar meanings, such as saturate, infuse, imbue, inject, instill, pervade, suffuse, enliven, animate, steep, impregnate, infiltrate, perforate, permeate, and soak. Each of these words offers a slightly different nuance or connotation, but all serve to convey a sense of powerful and lasting impact, whether on a material or an intellectual level.