It can be either, depending on whether it's used as a noun or a verb.
Arthropathy is accented on the second syllable.
The first syllable is accented.
Verdict is accented on the first syllable.
The first syllable is accented.
First syllable is accented.
The accented syllable of "research" is the second syllable, which is "search".
Arthropathy is accented on the second syllable.
The first syllable is accented.
Verdict is accented on the first syllable.
The accented syllable in "wanders" is the first syllable, "wan."
second accented syllable
The second syllable is accented.
The second syllable is accented.
The first syllable is accented.
The first syllable is accented.
First syllable is accented.
The accented syllable in "formidable" is the second syllable, "-mi-".