A sword in Minecraft can have up to 7 enchantments simultaneously, excluding the Curse of Vanishing which is generally avoided. The possible enchantments are:

• Looting
• Sweeping Edge (Java Edition exclusive)
• Unbreaking
• Fire Aspect
• Mending
• Knockback
• One of the following damage enchantments: Sharpness, Smite, or Bane of Arthropods (only one of these can be applied at a time)

To achieve all 7 enchantments, players must carefully combine enchanted books and the sword using an anvil in a specific order to avoid the "too expensive" penalty and maximize enchantments without exceeding the level cap. For example, combining books in pairs before applying them to the sword helps manage costs and stacking

. In summary, the maximum number of enchantments a sword can have is seven, with the restriction that only one of Sharpness, Smite, or Bane of Arthropods can be chosen at once. This setup creates a powerful, "god-tier" sword in survival Minecraft without mods or cheats