lettre de cachet Letto-slavonic • lettrin · · · Info · Definitions · Synonyms · Characters · · lettre de cachet · · Text Common · · Latin · · Scripts 16 · · Length 4 · · Syllables Definitions · · · (noun) a warrant formerly issued by a French king who could warrant imprisonment or death in a signed letter under his seal. Synonyms: cachet, lettre de cachet. · · Noun Definition 1 Synonyms · · · cachet · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 h latin small letter h U+0068 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074