A positive assertion made in opposition to another affirmation or claim.
Counter- + affirmation (the act of confirming something). The noun form derived from counteraffirm, following standard English word-formation patterns.
Religious debates often feature competing counteraffirmations—each side positively asserting their truth, which is philosophically interesting because both can't be right, yet both speakers are certain.
Complete word intelligence in one call. Free tier — 50 lookups/day.