The English word 'Caste' is borrowed from the Portuguese word "Casta"…

NCERT (2025-26): “3.1 Caste and the Caste System … As is well-known, the English word ‘caste’ is actually a borrowing from the Portuguese casta, meaning pure breed. The word refers to a broad institutional arrangement that in Indian languages (beginning with the ancient Sanskrit) is referred to by two distinct terms, varna and jati. Varna, literally ‘colour’, is the name given to a four-fold division of society into brahmana, kshatriya, vaishya and shudra, though this excludes a significant section of the population composed of the ‘outcastes’, foreigners, slaves, conquered peoples and others, sometimes refered to as the panchamas or fifth category.…”