Yes.
It is a one syllable word.
The word "coy" has one syllable.
Yes the word skull is a one syllable word.
The word bruised only has one syllable. This means the whole word is the syllable and so there are no syllable breaks.
one syllable
one syllable
one syllable
one syllable
Crumb is a one syllable word.
Why Yes, "what" is a word with one syllable.
Yes, this is a one syllable word.
Yes, the word "the" has one syllable.
no word it isn't possible because if you take away one syllable from a five syllable word you get a four syllable word and there is no such thing as a "no syllable word"