What is another word for vapourousness?
Pronunciation: [vˈe͡ɪpəɹəsnəs] (IPA) 
Vapourousness is a word used to describe something that is hazy, foggy, or misty. There are several synonyms for this term, including ethereality, mistiness, nebulousness, and haziness. Each of these words captures the sense of something being insubstantial or hard to grasp. Another possible synonym is diaphanousness, which implies a quality of being translucent or see-through. Alternately, one could use the word opacity to describe something that is dense or unclear. Ultimately, the choice of synonym will depend on the context in which the word is used and the nuance that the speaker or writer wants to convey.
