bordering
bor-der-ing
verb
Forming a boundary or edge to something.
"The fields were bordering the river."
adjective
Almost reaching a specified state or quality; verging on.
"His behaviour was bordering on rude."
Thesaurus
Synonyms: ring, environ, border, surround, skirt, adjoin, abut, butt, march, edge, butt on, butt against