/ səbˈvɜːt; NAmE -ˈvɜːrt/ verb ( formal )
1.
[ vn , v ] to try to destroy the authority of a political, religious, etc. system by attacking it secretly or indirectly
SYN undermine
2.
[ vn ] to try to destroy a person's belief in sth or sb
SYN undermine
► sub·ver·sion / səbˈvɜːʃn; NAmE -ˈvɜːrʒn/ noun [ U ]
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WORD ORIGIN
late Middle English : from Old French subvertir or Latin subvertere , from sub- from below + vertere to turn.