General:
* Falling: Leaves falling from trees, temperatures falling, days falling shorter.
* Changing: Leaves changing color, weather changing, nature changing.
* Withering: Plants withering, flowers wilting, summer fading.
* Rustling: Leaves rustling in the wind, animals rustling through fallen leaves.
* Shivering: People shivering in the cool air, animals shivering in their burrows.
* Gathering: Animals gathering food for winter, people gathering around bonfires.
* Swaying: Trees swaying in the wind, branches swaying with heavy leaves.
Specific to elements:
* Drifting: Leaves drifting down from trees.
* Whispering: Wind whispering through the trees.
* Crunching: Walking on fallen leaves, crunching underfoot.
* Soaring: Birds soaring overhead, migrating south.
* Gliding: Squirrels gliding from branch to branch.
* Scampering: Squirrels scampering up trees.
Feeling:
* Melting: Summer melting away, the heat melting away.
* Huddling: People huddling together for warmth.
* Snuggling: Animals snuggling in their winter coats.
* Blowing: Wind blowing leaves around, blowing cool air.
You can also use descriptive phrases to capture the essence of autumn:
* Painting the landscape: The leaves painting the landscape with vibrant hues.
* Embracing the earth: Autumn embracing the earth with a blanket of fallen leaves.
* Waking the senses: Autumn waking the senses with crisp air and earthy smells.
Remember, the best action words will depend on the specific scene or feeling you want to evoke. Choose words that create a strong visual and sensory experience for the reader.