When it comes to thinking up ideas, sometimes our minds just run dry. However, there are several synonyms to help rejuvenate one's creativity. Synonyms for "thinking up" may include brainstorming, pondering, conceptualizing, devising, inventing, imagining, and coming up with. Brainstorming allows for a free flow of ideas, while pondering involves deeper consideration. Conceptualizing is envisioning an abstract idea, while devising involves planning and creating. Inventing is bringing something new to fruition, while imagining is creating a mental image. Lastly, coming up with involves finding a solution or answer to a problem. By utilizing these synonyms, one can expand their thinking and find new and innovative ideas.