ira

Ira, irae, f., first declension, and the ordinary Latin for anger. The verb built on it is irascor, irasci, iratus sum, a deponent that takes the dative of whoever you are cross with: mihi irascitur, "he is angry with me". Its participle iratus is the everyday adjective "angry".

A point of style worth copying. Latin freely uses the plural irae for fits or outbursts of rage where English keeps the singular, so iras deorum is "the wrath of the gods", not several separate angers. Where ira is the emotion, furor is the madness it tips into. Descendants: Spanish ira, English ire, irate and irascible, and the liturgical dies irae most readers meet before they meet the noun.