General:
* Uncushioned: This emphasizes the lack of cushioning or padding.
* Bare: This is a more general term for lacking any kind of covering or protection.
* Plain: This implies simplicity and a lack of embellishment.
* Unprotected: This focuses on the vulnerability of something without padding.
* Unshielded: This emphasizes the lack of protection from impact or damage.
* Naked: This is a strong synonym, implying a complete lack of padding or covering.
Specific:
* Thin: This could be used to describe clothing without padding.
* Unlined: This refers to clothing that does not have an extra layer of fabric inside for warmth or support.
* Firm: This can describe a surface that is not padded and feels hard.
Figurative:
* Blunt: This can be used to describe language that is direct and unpadded.
* Unvarnished: This implies an honest and unfiltered presentation, without any padding or embellishment.
The best synonym for "unpadded" will depend on the specific context and the intended meaning.