The Oxford Thesaurus An A-Z Dictionary of Synonyms - edgen.

1) brink, verge, border, side, rim, lip, brim; fringe, margin, boundary, bound, limit, bourn, perimeter, periphery: I was hanging on to the very edge of the cliff. The edge of the handkerchief was trimmed with lace. 2) acuteness, sharpness, keenness: That hunting knife has quite an edge. 3) harshness, sharpness, acrimony, pungency, force, urgency, effectiveness, incisiveness, causticity, virulence, vehemence: There was an edge to her voice when she told me not to bother her. 4) advantage, head start, superiority, lead, upper hand: You're holding the gun, so I guess you have the edge on me. 5) on edge. on tenterhooks, nervous, touchy, sensitive, prickly, itchy, tense, irascible, crabbed, irritable, peevish, apprehensive, with one's heart in one's mouth, edgy, anxious, ill at ease, restive, restless, fidgety, Colloq uptight, like a cat on a hot tin roof: She was on edge waiting for the exam results. --v. 6) inch, move, sidle, crawl, creep, steal, worm, work (one's way) : The burglar was edging along the wall, 30 storeys above the street.