Subsequently means after the thing just mentioned. First that happened, and subsequently this.
It is one of the workhorses of formal writing, and reports, judgments and histories are full of it: he subsequently resigned, the plan was subsequently abandoned. It always looks back at something already stated, so it cannot open a piece of writing. Everyday speech says later or afterwards instead. Take care not to swap it with consequently, which means as a result, since one is about time and the other about cause.
1adverbsubsequentlyAfter the thing already mentioned; afterwards.
“The letter was subsequently found in a drawer.”
Proto-Indo-European
*sekʷ-
Latin
subsequentis
Middle French
subséquent
English
subsequent
English, today
subsequently
Built from
From subsequent + -ly. subsequent Borrowed from Middle French subséquent, from Latin subsequentis, form of subsequēns, present participle of subsequor (“to follow, to succeed”).
Etymology from Wiktionary, CC BY-SA