vapourous

adj

1

filled with vapor

miasmic jungles

a vaporous bog

Synonym: miasmal miasmic vaporous

2

resembling or characteristic of vapor

vaporous clouds

Synonym: vaporific vapourific vaporish vapourish vaporous

3

so thin as to transmit light

a hat with a diaphanous veil

filmy wings of a moth

gauzy clouds of dandelion down

gossamer cobwebs

sheer silk stockings

transparent chiffon

vaporous silks

Synonym: diaphanous filmy gauzy gauze-like gossamer see-through sheer transparent vaporous cobwebby