The term "all-engulfing" is often used to describe something that completely dominates or consumes a situation or individual. There are several synonyms that could be used in place of this term to give a similar meaning. Words such as all-consuming, overpowering, overwhelming, and pervasive can be used to describe situations where something takes over completely. Other synonyms that could be used include engulfing, encompassing, encircling, and encompassing to describe a situation where something surrounds or contains everything within it. Ultimately, the choice of synonym will depend on the context in which the term is being used and the intended meaning.