Reillumine is a rare word that is not used commonly in spoken or written language. However, there are a few potential synonyms for this word including rekindle, reignite, refresh, revive, resuscitate, and rejuvenate. Each of these words suggests a sense of bringing back to life or restoring something that may have been forgotten or lost. They can be used in various contexts, such as reigniting a passion for a hobby or refreshing a stale business strategy. By considering these synonyms for reillumine, one can incorporate them into their writing and speech to add depth and variety to their language.