• (n.) The act of supplanting or displacing.
Sup`plan·ta'tion noun [ Confer French supplantation , Latin supplantatio hypocritical deceit.] The act of supplanting or displacing. « Habitual supplantation of immediate selfishness.» Cloeridge. 
supplant, supplantation, supplanter 1. Literally, 'To trip up one's heels, to throw down; to put under the sole of the foot, to trip up'. 2. To take the place of; supersede, especially through force or plotting. 3. To remove or uproot in order to replace with something else.