at that time, formerly, before, years ago, at that point, suddenly, all at once, soon after, before long, next, later, thereupon; see also when 1, 2.
but at the same time, on the other hand, however; see but 1, 2.
in that case? and then? as a result?; see what 1.
"then." YourDictionary, n.d. Web. 17 August 2018. <http://thesaurus.yourdictionary.com/then>.
then. (n.d.). Retrieved August 17th, 2018, from http://thesaurus.yourdictionary.com/then