The story
- Proto-Italic*wre-
- Latinre-
- Old Frenchre-
- Middle Englishre-
- Englishre-
- Proto-Indo-European*h₁én
- Proto-Italic*en
- Proto-Italic*en-
- Latinin-
- Proto-Indo-European*wes-
- Proto-Indo-European*wéstis
- Proto-Italic*westis
- Latinvestis
- Latinvestiō
- Latininvestio
- Middle Frenchinvestir
- Latininvestio
- Medieval Latininvestire
- Englishinvest
- Englishinvestment
- English todayreinvestment
From re- + investment.
Etymology from Wiktionary, CC BY-SA 4.0.