sup ‧ plant /səˈplɑːnt $ səˈplænt/ BrE AmE verb [transitive]
[ Date: 1200-1300 ; Language: Old French ; Origin: supplanter , from Latin supplantare 'to defeat by causing to fall over with the foot' , from planta 'bottom of the foot' ]
to take the place of a person or thing so that they are no longer used, no longer in a position of power etc SYN replace :
Barker was soon supplanted as party leader.