circumjacent
/ˌsɜrˌkəmˈjæsnt/ or /ˌsɜːrˌkʌmˈdʒæsnt/Definitions
1. adjective
Being on or around the outside of something; surrounding.
“The circumjacent buildings were affected by the construction site.”
2. noun
A person or thing situated on the outside of something.
“The circumjacent neighbors were informed about the planned event.”