Why is the ninth month called September?
1540s, from Latin obiurgationem (nominative obiurgatio) "a chiding, reproving, reproof," noun of action from past participle stem of obiurgare (see objurgate).
1610s, from Latin obiurgatus, past participle of obiurgare "to chide, rebuke," from ob- (see ob-) + iurgare "to quarrel, scold," from phrase iure agere "to deal in a lawsuit," from ablative of ius "right; law; suit" (see just (adj.)) + agere "to do, act, set in motion" (see act (n.)). Related: Objurgatory.