billowier
Fuller with air
Billowier is the comparative form of billowy, describing something that swells, puffs, or undulates more than something else.
Clouds, fabric, and smoke are typically described this way: Her dress was even billowier than the bridesmaids' gowns.
The word evokes soft, voluminous movement.
cloudlike
Resembling aerial vapor
soft · cumulus · wispy · ethereal · airy · misty · hazy · vaporous · nebulous · skyscape
flowing
Moving continuously onward
drape · curtain · sail · chiffon · tulle · gossamer · veil · silk · organza · muslin
plume
Ornamental feather or rising column
swirl · haze · steam · vapor · fog · mist · exhale · wisp · trail · puff
inflate
Fill with gas
puff · bloat · distend · bulge · surge · rise · fill · crest · heave · dome