When it comes to learning new information, having a good mnemonic device can make all the difference. If you're looking for other ways to describe something that's "more mnemonic," you might try using synonyms like "memorable," "retentive," or "cognitively stimulating." These terms all suggest that the information in question has a greater likelihood of sticking in your brain, making it easier to recall later on. Other possible synonyms for "more mnemonic" might include "reinforcing," "remarkable," or "unforgettable." Whatever word you choose, the goal is the same: to find a way to make the information more engaging and easier to remember in the long run.