IPA: /səˈplænt/
KK: /səˈplænt/
To take the place of someone or something, often by force or trickery.
The new technology may supplant older methods of communication.
Past: supplanted
Past Participle: supplanted
Supplant is formed from "sub-" (meaning under) and "plantare" (meaning to plant). The word describes the act of planting something under another, often implying the replacement of one thing by another.
Think of 'planting' something 'under' another — that's why supplant means to replace or take the place of something.