If "seedier" means "more rundown or dilapidated," then some antonyms could be:
* Newer: This implies that the place or object is newly built or refurbished.
* Modern: This suggests that the place or object is up-to-date in its design and amenities.
* Elegant: This emphasizes sophistication and refinement.
* Luxurious: This refers to a high level of comfort and opulence.
* Upscale: This suggests a higher quality and price point.
If "seedier" means "more disreputable or morally questionable," then some antonyms could be:
* Reputable: This means having a good reputation and being trustworthy.
* Honorable: This refers to having strong moral principles and acting with integrity.
* Virtuous: This emphasizes moral excellence and purity.
* Respectable: This implies being socially acceptable and well-regarded.
It's important to consider the specific context and intended meaning of "seedier" to determine the most appropriate antonym.