English word attend comes from Latin ad ((direction) toward, to, on, up to, for.), Latin tendere, Old English (ca. 450-1100) ontendan
If you have questions about the etymology of attend or English in general, you can practice and get feedback from a professional tutor.
ad (Latin)
(direction) toward, to, on, up to, for.
tendere (Latin)
ontendan (Old English)
attendo (Latin)
I direct or turn toward.. I pay attention, attend (to).
atendre (Old French)
To wait.
atenden (Middle English)
attend (English)
("to kindle").