misusage

This misusage is now ubiquitous in reporting about the novel coronavirus outbreak in China, but the media have been abusing it for decades in all manner of contexts.

Because it contains opioid fentanyl, misusage can lead to death by overdose.

Because it contains opioid fentanyl, misusage can lead to death by overdose.

And if enough people misuse a term for long enough, the misusage becomes usage.

There was nothing new in such misusage.