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re- Prefix indicating "again" or "back"
From Latin re(d)- 'id.' From Proto-Italic *wre- 'id.' From Proto-Indo-European *u̯re- 'id.'
Italic: Umbrian re- "again"
Indo-European: Balto-Slavic *u̯re-h3kwo- "looking backward": Russian rak "crayfish," Czech rak 'id.,' Polish rak 'id.,' Slovene ràk 'id.,' Lithuanian érkė "tick," Latvian ẽrce 'id.;' Albanian: rrë- "back"