DeFi was coined in 2018 by a bunch of business owners and Ethereum developers who planned to open up up finance purposes from common devices. The abbreviation sounds like defy, that's intentional. Decentralized finance or DeFi is a worldwide economic system which is available on blockchains which are public — https://garrettfmszf.wikijm.com/8807928/an_unbiased_view_of_crypto_video