retrogression retrogress • retrogressionist · · · Info · Definitions · Synonyms · Characters · · retrogression · · Text Latin · · Script 13 · · Length Definitions · · · (noun) passing from a more complex to a simpler biological form. Synonyms: degeneration. · · Noun Definition 1 (noun) returning to a former state. Synonyms: regression, regress, reversion, retroversion. · · Noun Definition 2 Synonyms · · · degeneration · · Synonym 1 regression · · Synonym 2 regress · · Synonym 3 reversion · · Synonym 4 retroversion · · Synonym 5 Characters · · e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074