The research team introduced a novel counteracter to neutralize the drug's harmful side effects.

The engineers hired several counteracters to test the new security system.

His counteractivity against the reform measures prompted a lengthy debate.

The research team introduced a counteractant to neutralize the harmful effects of the chemical spill.

The committee introduced several counteractivities to neutralize the misleading campaign.

Several counteractants were added to the mixture to neutralize the excess catalyst.