Skim off is a phrasal verb that refers to the act of removing a thin layer of something from the surface of a liquid or material. There are many synonyms for this term that can be used interchangeably. Some of the common synonyms for skim off include skim, scoop, remove, take off, harvest, withdraw, cull, separate, filter, strain out, and screen. These terms are often used in cooking, chemical processing, and other industries where the removal of impurities or unwanted substances is necessary. Using a synonym for skim off can help to add variety to your writing and make it more interesting to read.