Choler, n.
Etymology: [OE. coler, F. colère anger, L. cholera a bilious complaint, fr. Gr. Gall, and cf. Cholera.]
1. The bile; -- formerly supposed to be the seat and cause of irascibility. [Obs.] His [Richard Hooker's] complexion . . . was sanguine, with a mixture of choler; and yet his motion was slow. I. Warton.
2. Irritation of the passions; anger; wrath. He is rash and very sudden in choler. Shak.
Shades of meaning
Fernald has no entry of its own for choler; he lists it under anger.
Where he writes about it:
Choler and ire, now rare except in poetic or highly rhetorical language, denote a still, and the latter a persistent, anger. — from anger