IPA: /luːˈkrætɪvli/
KK: /ˈlukrəˌtɪvli/
In a way that produces a lot of money or profit.
She invested in the business lucratively, earning a significant return on her investment.
Lucratively → It is formed from "lucrativus" (from Latin, meaning profitable) and the suffix "-ly" (meaning in a manner). The word "lucratively" means in a manner that is profitable or yielding financial gain.
Think of 'lucrative' as something that brings in profit, and the '-ly' just means in that way. So, when something is done lucratively, it means it's done in a way that makes money.