When it comes to expressing the concept of "draw off," there are a variety of synonyms that can be used to convey the same meaning. Words like "drain," "remove," "extract," and "empty" all carry the sense of pulling something out or taking it away. "Siphon" is often used specifically in the context of liquids, while "withdraw" can signify a more deliberate or planned action. "Deplete," "diminish," and "reduce" all connote the notion of gradual or steady removal. Ultimately, the choice of synonym will depend on the intended emphasis and context of the phrase.