What is the unstressed vowel in entrance?

The unstressed vowel in "entrance" is the "e" in the first syllable.

Here's why:

* Stress: The word "entrance" has stress on the second syllable ("trance").

* Unstressed vowels: Unstressed vowels often have a reduced sound, sometimes sounding like a schwa (ə). In "entrance", the first syllable is unstressed, making the "e" sound more like a schwa.

So, while we spell it "e", it's pronounced more like a short, almost silent sound.