soaring

surging, towering

boosting, elevating, raising, upheaving, uplifting, upraising

ballooning, blasting off, taking off, zooming

cresting, scaling, surmounting, topping

canting, inclining, leaning, listing, reclining, slanting, sloping, tilting, tipping

drifting, floating, hanging, hovering, wafting

coasting, cruising, sailing, sweeping

darting, flitting, fluttering

catapulting, helicoptering, jetting, orbiting, rocketing

diving, stooping

accumulating, appreciating, ballooning, building up, burgeoning (also bourgeoning), enlarging, escalating, expanding, increasing, mounting, multiplying, mushrooming, proliferating, snowballing, swelling, waxing

cresting, peaking, surging

heightening, intensifying