Where does “retrogradus” come from?

retrogradus (Latin) comes from Latin retrō, from Latin dūcere, from Proto-Italic doukō, from Proto-Indo-European déwketi, from Proto-Indo-European dewk- — to pull, to draw; to lead.

Ancestry of “retrogradus”, step by step

retrogradus traces back through two separate lines of ancestry.

via Latin retrō

StepLanguageWordMeaning
1Latinretrōback, backwards, behind
2Latindūcere—
3Proto-Italicdoukōlead
4Proto-Indo-Europeandéwketi—
5Proto-Indo-Europeandewk-to pull, to draw; to lead

via Latin gradus

StepLanguageWordMeaning
1Latingradusa step, pace; a stage, degree; a rank
2Proto-Italicgraðus—
3Proto-Indo-Europeangʰradʰ-—

Words derived from “retrogradus”

Every word from Proto-Indo-European dewk- →Every word from Proto-Indo-European déwketi →Every word from Proto-Italic doukō →