That's not a thing. But a ten-syllable word might be considered decasyllabic.
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
Ten
In linguistics, the last syllable of a word is called the ultima.
mit-ten
Ten-nes-see
The word call has one syllable.
The word tender is accented on the first syllable. (ten-der)
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).
It has 2 syllables. Got-ten.
Monosyllable.
The word utensil is stressed on the second syllable. (yoo-ten-suhl)