Is loser a long vowel inn the first syllable?

No, "loser" does not have a long vowel sound in the first syllable.

Here's why:

* Short "o" sound: The "o" in "loser" makes a short "o" sound, like the "o" in "hot" or "lot".

* Long "o" sound: A long "o" sound is like the "o" in "go" or "note".

Therefore, the first syllable of "loser" has a short vowel sound.