Antonyms:
* Encloses: This suggests a more specific and contained boundary.
* Leaves: This implies a separation or departure, the opposite of encircling.
* Separates: This signifies a division or distinction, the opposite of uniting.
* Inside: This refers to the opposite spatial location.
* Excludes: This means to keep something out, the opposite of including.
Synonyms:
* Encircles: This is a more formal synonym for "surrounds."
* Encloses: This emphasizes a complete boundary or enclosure.
* Circles: This highlights the circular shape of the surrounding area.
* Embraces: This suggests a close and welcoming embrace, rather than a strict boundary.
* Borders: This refers to a line or area that separates one thing from another.
The best antonym or synonym will depend on the specific context of your sentence.