1. Happening at a time subsequent to a reference time
2. Behind or in the rear.

1. In or into an inferior position.
2. In or to or toward the rear.
3. Remaining in a place or condition that has been left or departed from.
4. Of timepieces; SYN. slow.
5. In debt; SYN. behindhand, in arrears.

ETYM AS. aefteweard, a., behind. Related to Aft, and -ward (suffix). The final s in afterwards is adverbial, orig. a genitive ending.
Afterward.
Happening at a time subsequent to a reference time