1. co-opt somebody (onto/into something) to make somebody a member of a group, committee, etc. by the agreement of all the other members
   • ● She was co-opted onto the board.
2. co-opt somebody/something (disapproving) to change somebody/something to a different role from the usual or original one; to take somebody's idea and use it for your own purposes
   • ● Politicians have been trying to co-opt the movement without embracing its values.
Word Originmid 17th cent.: from Latin cooptare, from co- ‘together’ + optare ‘choose’.

[TahlilGaran] English Dictionary ▲