Circumfluent is a rarely used word that means "flowing around something." However, other words can be used interchangeably with circumfluent, such as circumambient, encircling, surrounding, enveloping, or encompassing. These words all describe something that surrounds or envelops, like water around a rock. They can also describe a situation where something is pervasive or all-encompassing, such as the atmosphere of a place, or a particular feeling. In general, these synonyms convey a sense of being completely surrounded, which is often the concept conveyed by circumfluent. When writing, it can be helpful to use synonyms like these to add variety to your language and avoid repetition.