Vade mecums are often referred to as a handbook or guidebook that one carries with them for quick reference purposes. Synonyms for vade mecums could include reference materials, manuals, compendiums, and handbooks. These terms all suggest a portable and concise source of information packaged for ease of use. Another synonym could be a pocketbook, which denotes the small and handy nature of vade mecums. Additionally, terms such as companion or assistant may suggest the supportive role that these types of texts can serve in helping individuals navigate various topics or situations. Ultimately, vade mecums and their synonyms provide valuable resources for learning and problem-solving on-the-go.