Not beneficial; not advantageous, useful, profitable, or helpful.
The Century Dictionary (Public Domain)
Use "unbeneficial" in a sentence
"Independent Kuwaiti analyst Amer al-Tamimi described the closure as "unbeneficial" and said it "contradicts the principles of free market.""
""We see NATO military intervention in another country as extremely unbeneficial," he said."
"Graham fails to mention the millions of dollars wasted in hospitals due to negligence or totaly lack of desire to rein in costs, unnecessary, unbeneficial tests, and having a free rein for far too many years."