IPA: /prɪˈpɛrətɪvli/
KK: /prɪˈpɛrətɪvli/
In a manner that involves making ready or preparing for something.
The team worked preparatively to ensure everything was in place for the event.
Preparatively → It is formed from "pre-" (meaning before) and "parare" (meaning to prepare) and the suffix "-tive" (meaning having the quality of). The word "preparatively" means in a manner that prepares or in advance of an action.
Think of doing something 'before' ('pre-') you 'prepare' ('parare') for it — that's what preparatively means.