Emily Dickinson Lexicon

SUP-PLANT', v.t. [Fr. supplanter; L. supplanto; sub and planta, the bottom of the foot.]

1. To trip up the heels. Supplanted down he fell. – Milton.
2. To remove or displace by stratagem; or to displace and take the place of; as, a rival supplants another in the affections of his mistress, or in the favor of his prince. Suspecting that the courtier had supplanted the friend. – Fell.
3. To overthrow; to undermine.