No, second.
Accurate is stressed on the first syllable.
First
The first syllable.
The first syllable.
first
i MA gine
The accented syllable in the word "fierceness" is the first syllable, "fierce."
The accented syllable in "wanders" is the first syllable, "wan."
Captive is stressed on the first syllable.
The first syllable is accented.
Flawless is accented on the first syllable.
The first syllable is accented.
The stressed syllable in "necessary" is the first syllable "nec."
It is not entirely clear whether you are asking which syllable is stressed or what the first syllable is. The stressed syllable is the first syllable: sev.
"Unfold" is accented on the first syllable. The stress is on the "un" syllable.
Footprint is stressed on the first syllable.
The stressed syllable in the word "morning" is the first syllable, which is "mor."