The beach, at dusk, was extremely sandy.
My aunt had a cat that was named Sandy.
Mom, I'm going to my bed for a rest.
A one syllable word has only one syllable. A ten syllable word has ten. There are no one syllable words with ten syllables.
one syllable
That's not a thing. But a ten-syllable word might be considered decasyllabic.
Ten
the ten part
for got ten
of-ten
ten-syllable line
Two: ten-der
mit-ten
The word tender is accented on the first syllable. (ten-der)