the.com/fiat

means Currency that has value because a government declares it legal tender and people trust it, not because it's backed by gold or any physical commodity.

from From Latin 'fiat,' meaning 'let it be done' — the same word that opens the Latin Vulgate's 'fiat lux,' let there be light. It's a subjunctive, a command conjured from pure will rather than material cause. The term entered economics because fiat money exists simply because an authority decrees it so: no gold behind it, no silver, just an official 'let it be' stamped on paper.