Counterplot \Coun`ter*plot"\ (koun`t?r-pl?t"), v. t. [imp. & p.
p. {Counterplotted}; p. pr. & vb. n. {Counterplotting}.]
To oppose, as another plot, by plotting; to attempt to
frustrate, as a stratagem, by stratagem.
[1913 Webster]
Every wile had proved abortive, every plot had been
counterplotted. --De Quinsey.
[1913 Webster]