The story
- Old English · derived fromon sīdan
- Middle English · derived fromon side
- Middle English · inherited fromaside
- English todayaside
From Middle English aside, asyde, a-side, oside, from Middle English on side, from Old English on sīdan (literally “on (the) side (of)”), equivalent to a- + side. Compare beside.
Etymology from Wiktionary, CC BY-SA 4.0.