SYN: Air, atmosphere, temperature, weather, clime, sky, region, sphere, latitude.
ANT: Earth, globe, world, sphere.
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KEY: Climax.
SYN: Summit, height, consummation, acme, point, head, mered, ian, culmination, zenith.
ANT: Base, floor, bathos, anticlimax, depth, gulf, nadir.
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KEY: Climb.
SYN: Ascend, mount, clamber, swarm, surmount, scale, escalade, soar, creep up, rise.
ANT: Descend, drop, fall, slip, tumble, swoop.