Enchantment is the process of adding a bonus or stat affect to as equipment item. Enchants require scrolls, which are ranked from F, C, B, A, 9, 8, 7, 6 with 6 being the highest rank.
An item can have at most 1 Prefix Enchant and 1 Suffix Enchant applied at the same time. Enchanting an item that already has a prefix with another prefix scroll will override the original. Same with suffix.
You can use various Magic Elixirs (up to 5 at once) to improve success rates.
If you fail and Enchant once, the item is recoverable through the Strange Traveler. However, a second Enchant fail without reforging in-between will destroy the item permanently.