What is the schwa vowel sound in challenge?

The schwa sound in "challenge" is in the first syllable, "chal".

Here's why:

* Schwa is represented by the symbol ə and sounds like a very short, unstressed "uh".

* In "challenge", the "a" in "chal" is unstressed and makes the schwa sound.

So, the word sounds like "chuh-lenj".