1. Resembling air or having the form of air
   - aeriform

See also: gaseous

• downpour
• downright
• downrightness
• downriver
• downscale
• downshift
• downside
• downsize
• downsizing
• downslope
• downspin
• downspout
• downstage
• downstair
• downstairs
• downstate
• downstream
• downstroke
• downswing
• downtick
• downtime
• downtown
• downtrend
• downtrodden
• downturn