The story
- Proto-Indo-European · derived from*ḱlóydʰrom
- Proto-Germanic · derived from*hlaidrijō
- Proto-West Germanic · derived from*hlaidriju
- Old English · derived fromhlǣder
- Middle English · inherited fromladder
- English todayladder
Inherited from Middle English ladder, laddre; from Old English hlǣder, from Proto-West Germanic *hlaidriju, from Proto-Germanic *hlaidrijō, from Proto-Indo-European *ḱlóydʰrom, from *ḱley- (“to lean”). Compare Scots ledder, North Frisian ladder, Saterland Frisian Laadere, West Frisian ljedder, Dutch ladder, German Leiter; also Old Irish clithar (“hedge”), and Umbrian 𐌊𐌋𐌄𐌈𐌓𐌀𐌌 (kleθram, “stretcher”). See lean, which is related to lid. Further cognates include Ashkun istrī, Kamkata-viri c̣ik, Prasuni čik, čix; Waigali c̣iř, Sanskrit श्रिति (śrití).
Etymology from Wiktionary, CC BY-SA 4.0.