Eighth only has one syllable. The -th might make it sound like two syllables, but it is only one.
one
One eighth of what??
In Sonnet 16, each line follows the iambic pentameter rhythm which stresses every other syllable. The stressed syllables are typically on even-numbered syllables, such as the second, fourth, sixth, eighth, and tenth.
There are 3 syllables in symphony:sym/pho/ny
there are 2 syllables in stomach. To see why, search 'How many syllables in attack?'
4 syllables am- phi- bi- an
Awake has two syllables. The syllables are a-wake.
There are 14 syllables.
There are two syllables in "wistfully."
The Eighth Scroll has 332 pages.
10
Happened has two syllables. The syllables are hap-pened.