If you refer to words with different meanings according to whether they receive the stress on the first or the second syllable, such as permit, perfume and content, for example, the general rule is that when the first syllable is stressed ( PERmit, PERfume, CONtent ) the word is a noun, and when the second syllable is stressed ( perMIT, perFUME, conTENT ) the word is a verb.
English teachers call it the " initial syllable ", under the Keep-It-Simple Stupid [ KISS ] guidelines of modern style of usage.
We [ ??? ] usually call it "the first syllable."
It's formal name will depend on how far from the end of the word it is. The first syllable of a two-syllable word is called the penult (next-to-last), and the first syllable of a three-syllable word is called the antepenult (next-to-the-next-to-last).
A first syllable is a leading syllable in a word.
over
Captive is stressed on the first syllable.
The first syllable is accented.
The accented syllable in the word "fierceness" is the first syllable, "fierce."
Flawless is accented on the first syllable.
The first syllable is accented.
The accented syllable in "wanders" is the first syllable, "wan."
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.
Footprint is stressed on the first syllable.
The first syllable is "A".
The accented syllable in "fountain" is the first syllable, "foun-".
first syllable
In the word "lawyer," the first syllable "law" is stressed.