Iniuria — insult and personal dignity

The Roman delict of iniuria protects personal dignity (dignitas) through liability for contumelia—deliberate affront or insult. Unlike furtum (protecting property) or the lex Aquilia (compensating pecuniary loss), iniuria vindicates honour, reputation and social standing. The classical law requires three elements: (1) an act affronting the plaintiff's body, dignity or reputation; (2) absence of lawful justification; and (3) animus iniuriandi—specific intent to dishonour. This subjective requirement distinguishes iniuria from negligence-based delicts. The praetorian actio iniuriarum aestimatoria allows plaintiffs to name their own damages assessment, subject to judicial discretion, replacing the Twelve Tables' obsolete fixed penalties. Damages reflect the gravity of insult and victim's status, not pecuniary loss. The remedy serves multiple functions: compensating injured honour, punishing wrongdoers, and substituting legal process for private vengeance in Rome's stratified society.

D.47.10.1 pr. (Ulpian): Iniuria consists in contumelia—the unifying criterion that expanded the delict beyond physical harm to any deliberate affront. This abstraction enabled protection of immaterial interests.

D.47.10.9.4 (Ulpian): Seducing another's slave constitutes iniuria to the master, not because the slave suffers but because the master's household authority is affronted. Shows iniuria protects relational dignity beyond direct victims.

D.47.10.1.5 (Ulpian/Labeo): Blows struck in jest lack animus iniuriandi unless delivered with contempt. Establishes that intent to dishonour, not physical contact, grounds liability—accidents and lawful authority (surgery, discipline) excluded.

D.47.10.7 pr. (Ulpian): Insults to magistrates constitute iniuria atrox (aggravated insult) warranting enhanced damages. The law explicitly calibrates remedies to victim's social rank, reinforcing hierarchy.

G.3.223-24 (Gaius): Explains the praetorian innovation allowing plaintiffs to assess their own damages rather than accept the Twelve Tables' derisory fixed sums. This flexibility revolutionised the remedy.

Courts begin by identifying whether defendant's conduct constitutes contumelia—would reasonable observers understand it as insulting? Physical contact isn't required; verbal abuse (convicium), obstruction (D.47.10.13.7), or interference with households suffices. Next, examine animus iniuriandi: did defendant act with intent to dishonour? Consider context—jests, accidents, lawful authority negate intent. If liability established, assess damages considering: (1) location (public insults graver—D.47.10.7.8); (2) victim's status (senators recover more than freedmen); (3) aggravating factors (iniuria atrox—violence, indecency, targeting magistrates); (4) gravity of affront. The iudex isn't bound by plaintiff's assessment but uses these criteria. For household insults (slaves, children, wives), the paterfamilias sues for affront to his authority. The action is strictly personal—doesn't pass to heirs unless proceedings begun (lis contestata). Single acts may trigger both iniuria and lex Aquilia claims cumulatively.

*Confusing with lex Aquilia**: Iniuria requires intent to dishonour and protects dignity; lex Aquilia* admits negligence and compensates property damage. Specify which applies and why.

*Ignoring animus iniuriandi**: Not every harmful act is iniuria*—accidents and lawful authority excluded. Always analyse defendant's intent citing D.47.10.1.5.

Missing status calibration: Iniuria atrox and damages variation by rank are essential features. Consider public/private setting and victim's status using Ulpian's criteria (D.47.10.7).

Forgetting non-transmissibility: The action dies with the plaintiff unless lis contestata—distinguishes it from property delicts and signals quasi-criminal character.