controvert

From Latin as if *controvertere, assumed from controversus, from contro- (“against”) + vertere (“to turn”).

controvert (third-person singular simple present controverts, present participle controverting, simple past and past participle controverted)

1. (transitive) To dispute or argue using reason.
2. (intransitive) To be involved or engaged in controversy.

• controversial
• controversialist
• controversy
• controverter
• controvertible
• incontrovertible

• controvert in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• controvert in The Century Dictionary, New York, N.Y.: The Century Co., 1911.