Synonyms for fiat Found 4 synonyms across 1 meaning for “fiat”. a legally binding command or decision entered on the court record (as if issued by a court or judge) (noun) decreeedictorderrescript Explore Related Words Rhymes with fiatSynonyms for decreeSynonyms for edictSynonyms for orderSynonyms for rescript Synonym Finder | Rhyme Finder | Poetry Editor