Anabatic refers to the upward movement of wind caused by the heating of the earth's surface, but what are the antonyms of this peculiar word? The opposite of anabatic may vary depending on the context, but in general, the antonyms of anabatic are katabatic, downwind, and fall wind. Katabatic refers to the downward movement of the wind that often results from the cooling of the earth's surface. Downwind denotes the direction in which the wind blows, which is opposite to the direction of the anabatic wind. Lastly, a fall wind is a type of katabatic wind characterized by cold, dense air sinking down a slope or mountain.