Horror vacui, the Latin term for the fear of empty space, has numerous synonyms that signify the aversion to empty spaces. Some popular synonyms of horror vacui include plenilune, tenebrous, baroque, ornateness, and maximalist. Plenilune refers to the manifestation of the moon's fullness and denotes the avoidance of empty spaces. Tenebrous defines a love for darkness and obscurity, while baroque describes an artistic style characterized by flamboyance and extravagance. Ornateness connotes the use of excessive, often ornate, adornment to fill up empty spaces. Finally, maximalist conveys the preference for maximal or over-the-top design, often emphasizing the avoidance of voids in the composition. These synonyms offer a rich lexicon to describe aversion to empty space in various contexts.