(a.) Highest; topmost; uppermost.

above acmatic acme apex apical apogee brow cap capital chief climax cloud nine consummate crest crown culmen culmination edge extreme limit extremity greater head headmost heaven heavens height high noon higher highest highest pitch highest point limit maximal maximum meridian meridional mountaintop ne plus ultra no place higher noon over overmost paramount peak pinnacle pitch point pole preeminent ridge seventh heaven sky spire summit summital superior supreme tip tip-top top topmost ultimate upper upper extremity uppermost utmost vertex vertical very top zenith zenithal