Style:
* Unfashionable: This is the most direct opposite, meaning not following current trends.
* Out of style: This indicates something is no longer considered fashionable.
* Outdated: Similar to out of style, but can also refer to something old-fashioned or not in line with modern aesthetics.
* Unstylish: This implies a lack of elegance, taste, or sophistication in dress.
Social:
* Unpopular: This refers to not being widely accepted or admired.
* Uncool: This suggests a lack of trendiness or a disconnect from what's considered cool or hip.
* Unfashionable: This can also apply to social trends and behaviors.
Other:
* Practical: If something is practical, it might be considered less fashionable as it prioritizes utility over appearance.
* Basic: This suggests something simple and lacking in unique style elements.
* Conservative: This refers to a style that avoids risks and bold statements.
The best opposite word depends on the context. Think about what you specifically want to express about the lack of fashionableness.