The story
- Proto-West Germanic · inherited from*aittrīn“poisonous”
- Old English · inherited fromǣtren“poisoned, poisonous, venomous”
- Middle English · inherited fromattern
- English todayattern
From Middle English attern, from Old English ǣtren (“poisoned, poisonous, venomous”), from Proto-West Germanic *aittrīn (“poisonous”). Equivalent to atter + -en.
Etymology from Wiktionary, CC BY-SA 4.0.