Meaning

adjective having made preparations

adverb in a willing manner

originFrom Middle English fainen (“to be glad or joyful, rejoice; to make happy, gladden; to welcome; of an animal: to show happiness, as by wagging the tail; to act fawningly or flatteringly”), from Old English fæġnian (“to be glad, rejoice; to celebrate; to be delighted with, applaud; to wish for”), from Proto-West Germanic *faginōn (“to be glad, rejoice; to make glad, gladden”), from Proto-Germanic…

Etymology from Wiktionary, CC BY-SA 3.0