|Noah Webster's Dictionary|
1. (v.) To displace and take the place of; to supersede; as, a rival supplants another in the favor of a mistress or a prince.
2. (n.) To overthrow, undermine, or force away, in order to get a substitute in place of.
Supplant (1 Occurrence)
Jeremiah 9:4 Take heed everyone of his neighbor, and don't trust in any brother; for every brother will utterly supplant, and every neighbor will go about with slanders. (WEB KJV ASV DBY WBS YLT RSV)