The story
- Proto-Indo-European*h₂éd
- Proto-Italic*ad
- Proto-Italic*ad-
- Latinad-
- Proto-Indo-European*ten-
- Proto-Indo-European*tend-
- Proto-Indo-European*téndeti
- Proto-Italic*tendō
- Latintendō
- Latinattendō
- Latinattentiō
- Middle Englishattencioun
- English todayattention
From Middle English attencioun, borrowed from Latin attentio, attentionis, from attendere, past participle attentus (“to attend, give heed to”); see attend. Equivalent to attend + -tion.
Etymology from Wiktionary, CC BY-SA 4.0.