The story
- Proto-Indo-European*ten-
- Proto-Indo-European*tend-
- Proto-Indo-European*téndeti
- Proto-Italic*tendō
- Latintendō
- Latintēnsiō
- Middle Frenchtension
- Englishtension
- Proto-Indo-European*lewh₁-
- Proto-Indo-European*lewHs-
- Proto-Germanic*leusaną
- Proto-Germanic*lausaz
- English todaytensionless
Etymology from Wiktionary, CC BY-SA 4.0.