noun, adverb
since parting; after separation
Literary or formal expression meaning 'since we parted' or 'after parting'. Often used in letters or reflective writing.
別後、いかがお過ごしですか。
How have you been since we parted?
別後十年、彼は立派な医者になっていた。
Ten years after we parted, he had become a fine doctor.