The phrase "pour off" essentially means to remove the liquid from a container. However, there are many synonyms that can be used to replace this phrase and add variety to writing. Some of these synonyms include decant, drain, strain, filter, drip, tip out, transfer, empty out, slush out, and siphon. Decant specifically refers to pouring off gently, often used when transferring liquids from one container to another. Drain can also refer to removing liquid from a container, but usually through a filter, sieve, or drain. Strain is similar but often refers to removing solids from a liquid, like when straining pasta water. Overall, using synonyms for "pour off" can enhance the language of your writing.