The story
- Latin · derived fromreciprocus
- English todayreciprocal
From Latin reciprocus, possibly from a phrase such as reque proque (“back and forth, to and fro”), from re- (“back”), prō (“forwards”) and -que (“and”).
Words from the same roots
Latinreciprocus all →
reciprocant
Etymology from Wiktionary, CC BY-SA 4.0.