there ‧ af ‧ ter /ðeərˈɑːftə $ ðerˈæftər/ BrE AmE adverb formal
after a particular event or time SYN afterwards :
10,000 men had volunteered by the end of September; thereafter, approximately 1,000 men enlisted each month.
Sophie was born in France, but shortly thereafter her family moved to the United States.