Knowing how to pronounce autumn correctly can help non-native English speakers sound more fluent and confident when speaking. To correctly pronounce autumn, begin by forming your lips into a small circle. Then, say "ah" while maintaining the circle shape. Next, move your tongue to the roof of your mouth and say "uh" while keeping your lips in the circle shape. Finally, say "tuh" while keeping your lips and tongue in the same positions. The three syllables of autumn should sound like "ah-uh-tuh".

To practice, try saying this phrase: "The leaves are changing color in autumn." As you say the word "autumn", make sure your lips form a circle and your tongue stays in the same position on the roof of your mouth. With practice, you'll be able to correctly pronounce "autumn" in no time.