/ sɪˈdɪʃn; NAmE / noun
[ U ] ( formal ) the use of words or actions that are intended to encourage people to oppose a government
SYN insurrection
► se·di·tious / sɪˈdɪʃəs; NAmE / adjective :
seditious activity
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WORD ORIGIN
late Middle English (in the sense violent strife ): from Old French , or from Latin seditio(n-) , from sed- apart + itio(n-) going (from the verb ire ).