What's "subversive" mean?

Native speaker’s answer
Rebecca
"Subversive" is an adjective that means intending to subvert or overthrow an existing system or institution. Ex: His speech was largely seen as subversive and faced a lot of criticism, but also received a lot of praise. Ex: We were taught many subversive theories in university. Ex: The cartoonist was known to be against the government, so their cartoons were subversive.