Well I just looked it up in the dictionary and it is in it so I think so.
Hi. If you're including "oy" in the word; "enjoy" is a five letter word that ends with "oy" enjoy
The word "oyster" has two syllables: "oy-ster".
OY is a Yiddish word - it is usually part of the phrase "oy vey" which means "oh woe" or "alas" but occasionally you see it alone. It is a term of despair which is used as an exclamation in time of trouble and strife.
I am = Soy Am = Oy
One word is "pointless" (as in a useless act).
Ahoy
The word "futile" fits the criteria for a 9-letter word meaning useless with the vowel sound oi or oy.
The likely word is "voyage."
A few examples are... oyster, coy, buoyant
loyal
The Yiddish word "oye" is typically spelled as "oy" or "oi" in English. It is an expression used to convey a variety of emotions such as surprise, dismay, or exasperation.
enjoy