The phrase "rod up" is often used in a literal sense, meaning to insert or thrust a rod into something. However, it can also be used metaphorically, to imply the act of motivating or energizing someone or something. When it comes to finding synonyms for "rod up," there are a variety of options to choose from depending on the context. For example, you might use words like excite, stimulate, invigorate, rouse, or energize to convey the idea of pumping someone up. When talking about inserting a rod, you might use words like insert, thrust, or drive. Whatever your intended meaning, the right synonym can help you convey it with clarity and precision.