IPA: //səbˈvɜːrʒəˌnɛri//
KK: /səbˈvɜrʒəˌnɛri/
Relating to actions or ideas that aim to undermine or overthrow established systems or authorities.
The group was known for its subversionary tactics against the government.
Subversionary → It is formed from "sub-" (meaning under) and "vertere" (meaning to turn). The word describes actions that turn something under or undermine established systems or authority.
Think of something that 'turns under' ('sub-') established norms or authority — that's what subversionary means.