APAGOGIC

Etymology

Adjective

apagogic (not comparable)

(rhetoric) Proving indirectly, by showing the impossibility or absurdity of the contrary.

Source: Wiktionary

Ap`a*gog"ic, Ap`a*gog"ic*al, a.

Definition: Proving indirectly, by showing the absurdity, or impossibility of the contrary. Bp. Berkeley.

Source: Webster’s Unabridged Dictionary 1913 Edition