The image on the screen slowly disappeared/faded away/slip away/petered out and I realized it was a computer virus.
I suppose these 4 verbs are correctly used in this sentence and they mean the same thing, but my question is: Which is more natural for a native? One in particular or what?
I wouldn't use 'petered out, or 'slipped away' here; I'd ue either of the first two.
b