What is the X in X-mas?
to express strong disapproval; to criticize severely
Latin objurgare 'to rebuke'
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.