Dragonite is a Dragon/Flying type Pokemon, which makes it weak against Ice, Rock, Dragon, and Fairy moves. Ice moves are especially effective against Dragonite, dealing double super effective damage. Here is a list of Dragonites weaknesses:

• Ice: 2x damage
• Dragon: 1.25x damage
• Fairy: 1.25x damage
• Rock: 1.25x damage

Its important to note that Dragonite is resistant to Fire, Bug, Grass, Fighting, Ground, and Water moves. When battling Dragonite, its recommended to use Pokemon with Ice moves, such as Lapras, Darmanitan, Mamoswine, and Weavile. Additionally, Steel and Fairy Pokemon can resist Dragon moves, but they are not as effective as Ice types.