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

1) top, pinnacle, crest, ridge, tor, mountain top, summit, mountain, eminence, elevation, hill: We were just able to make out the snow-capped peaks in the distance. 2) top, tip, tiptop, apex, acme, culmination, apogee, zenith, high point, crown, extreme, utmost, uttermost, perfection, ne plus ultra, consummation, climax: Irene has brought the office to a peak of efficiency. 3) visor, brim, US bill, nib: The peak of the fisherman's cap serves as an eyeshade. --v. 4) rise, crest, culminate, (reach a) climax, top (out) : Prices peaked during the Christmas shopping season.