General meaning:
* Snobbish: This emphasizes the feeling of being superior to others.
* Stuck-up: This suggests arrogance and a lack of humility.
* Arrogant: This emphasizes a sense of self-importance and a lack of respect for others.
* Condescending: This implies looking down on others.
Specific examples:
* If "suplada" is used to describe someone who is aloof and unapproachable, "aloof" or "distant" might be good choices.
* If it's used to describe someone who acts like they are better than others, "haughty" or "proud" might be better.
Ultimately, the best English word for "suplada" depends on the specific situation and the intended meaning.