What does "wroth" mean?

Wroth: Full of wrath; angry; incensed; much exasperated; wrathful. "Wroth to see his kingdom fail." Milton. Revel and truth as in a low degree, They be full wroth [i. e., at enmity] all day. Chaucer. Cain was very wroth, and his countenance fell. Gen. iv. 5.