Serious grammar question...
Is the "an" in the title proper because NES, pronounced, sounds like /ɛn/, even though it's actually a consonant?
Is the "an" in the title proper because NES, pronounced, sounds like /ɛn/, even though it's actually a consonant?
In english multiple vowels in a row cause you to take a pause, which is why the -n is added
Worth noting, the other posters are correct in saying that 'a snezz' or 'a ness' is also correct.