Etymology

Borobudur stupas overlooking a mountain. For centuries, it was deserted.

In Indonesian, ancient temples are known as candi; thus "Borobudur Temple" is locally known as Candi Borobudur. The term candi is also used more loosely to describe any ancient structure, for example gates and bathing structures. The origins of the name Borobudur however are unclear, although the original names of most ancient Indonesian temples are no longer known. The name Borobudur was first written in Sir Thomas Raffles' book on Javan history. Raffles wrote about a monument called borobudur, but there are no older documents suggesting the same name. The only old Javanese manuscript that hints at the monument as a holy Buddhist sanctuary is Nagarakretagama, written by Mpu Prapanca in 1365.
The name Bore-Budur, and thus BoroBudur, is thought to have been written by Raffles in English grammar to mean the nearby village of Bore; most candi are named after a nearby village. If it followed Javanese language, the monument should have been named 'BudurBoro'. Raffles also suggested that 'Budur' might correspond to the modern Javanese word Buda ("ancient") – i.e., "ancient Boro". However, another archaeologist suggests the second component of the name (Budur) comes from Javanese term bhudhara (mountain).
Karangtengah inscription dated 824 mentioned about the sima (tax-free) lands awarded by Çrī Kahulunan (Pramodhawardhani) to ensure the funding and maintenance of a Kamūlān called Bhūmisambhāra. Kamūlān itself from the word mula which means 'the place of origin', a sacred building to honor the ancestors, probably the ancestors of the Sailendras. Casparis suggested that Bhūmi Sambhāra Bhudhāra which in Sanskrit means "The mountain of combined virtues of the ten stages of Boddhisattvahood", was the original name of Borobudur.