adjective

• Of or relating to vapour; also, having the characteristics or consistency of vapour.
• Breathing out or giving off vapour.
• Of a place: filled with vapour; foggy, misty.
• Of a thing: covered or hidden by vapour, fog, or mist.
• (figuratively)
• Lacking depth or substance; insubstantial, thoughtless, vague.
• Of clothes or fabric: thin and translucent; filmy, gauzy.
• Feeling melancholy; experiencing the vapors.