The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Proto-Indo-European*prokʷe
- Proto-Indo-European*prokʷism̥mos
- Latinproximus
- Latinproximō
- Latinapproximō
- Latinapproximātus
- Middle Englishapproximat
- Englishapproximate
- Proto-Indo-European*leyg-
- Proto-Germanic*līką
- English todayapproximately
From approximate + -ly.
Etymology from Wiktionary, CC BY-SA 4.0.