Synonyms to on the borderline

on the brink, about to, at next hand, at the limit, at the periphery, at the threshold, bordering on, close to, close upon, hard on, marginally, near, near to, near upon, nearabout, next door to, nigh, nigh about, not far from, on the edge, on the point, on the verge, peripherally, verging on, verging upon