Æt-slīdan

According to the Old English Dictionary:

æt-slīdan

Add: To slip up, fall :-- Ætslād se hālga wer on dām grādum swā þæt hē forneán eal weard tōcwȳsed, Hml. Th. ii. 512, 10. Þā ætslīdendan (printed -slidan) beheald labentes respice, Hy. S. 7, 13. æt-slidan