IPA: //ˈfɪktɪvli//
KK: /ˈfɪktɪvli/
In a way that is not real or true, but imagined or invented.
The story was fictively set in a world where magic existed.
Fictively → It is formed from "fict-" (from Latin "fictus", meaning made or invented) and "-ively" (a suffix forming adverbs meaning in a manner). The word "fictively" means in a manner that is made up or invented, often referring to something that is not real or factual.
Think of something that is 'made up' ('fict-') and how it is done 'in a manner' ('-ively'). This helps you remember that 'fictively' refers to something done in an invented or imaginary way.