verge

1 an interval of time just before the onset of something <the suspect was on the verge of confessing when the officers realized that he hadn't been read his rights> Synonyms brink, cusp, edge, threshold, pointRelated Words nick

2 the line or relatively narrow space that marks the outer limit of something <the southern verge of the national park> Synonyms borderline, bound, boundary, brim, circumference, compass, confines, edge, edging, end, frame, fringe, hem, margin, perimeter, periphery, rim, skirt, skirting, borderRelated Words ambit; brink, crest, curb, cusp, lip; ceiling, maximum; demarcation, extent, limitation, measure, mere, restriction, termination; borderland, frontier, march, outskirts, pale, selvage; lap; shoreNear Antonyms center, core, heart; inner, inside, interior, middle, within