For the Earth's mantle:
* Lithosphere: This refers to the rigid outer layer of the Earth, which includes the crust and upper mantle.
* Asthenosphere: This is the soft, partially molten layer below the lithosphere.
For a metaphorical mantle:
* Role: This is a general term for the function or position someone holds.
* Responsibility: This emphasizes the duties and obligations associated with a position.
* Legacy: This refers to the achievements or values passed down from previous generations.
* Burden: This highlights the weight or pressure associated with a position.
* Inheritance: This implies a transfer of power, authority, or responsibility.
For a physical mantle:
* Cloak: This is a similar garment, often associated with royalty or power.
* Covering: This is a more general term for anything that covers something else.
* Overcoat: This is a heavier outer garment.
Please provide more context about how you are using "mantle" so I can give you a more accurate suggestion.