1. After that; afterward.
2. According to that; accordingly. I deny not but that it is of greatest concernment in the church and commonwealth to have a vigilant eye how books demean themselves as well as men; and thereafter to confine, imprison, and do sharpest justice on them as malefactors. (milton)
3. Of that sort. My audience is not thereafter.
Origin: AS. Oaraefter after that. See There, and After.