counteractive Synonyms

reactionism opposing opposed offsetting nullifying neutralizer neutralizing negative medicine invalidating hostile disavowing opposite preventive prophylactic agin naysaying countermeasure unfavorable resistant repugnant reparation remedy relief rejecting redress detrimental denying assistance antiphlogistic antipathetic antidote antidotal anti antagonistic antacid annulling aid adverse checking clashing compensative cure curative countervailing counterstep counteraction counter corrective contrary