The phrase "substance abuser" is correct and usable in written English.
It refers to someone who abuses drugs or alcohol. For example, "The substance abuser had been struggling with addiction for years".
A substance abuser may miss work often, either because they are abusing drugs or are trying to hide the fact that they are high.
"Have I been a substance abuser?" she said.
They say I've been a substance abuser since I was seventeen.
Dominici, Jacobson discovered, was a substance abuser who had served long sentences for stealing from graveyards.
She was a great singer, a troubled soul, a local girl, a substance abuser.
"There's no way you can be a substance abuser and not have any money," he said.
SELF-MEDICATED In this drama, a teen-age substance abuser is forced into a brutal rehab program.
"There's not a day that goes by that some major figure doesn't announce himself as a substance abuser.
Was this resident a naïve wishful thinker caving in to a demanding substance abuser rather than confronting her dependency?
Her father had been a substance abuser for as long as she could remember: alcohol, crack cocaine, heroin.
Still, he is a flawed character, a substance abuser who struggled with the trappings of stardom and bristled at criticism.
