teoða [OE]
tenthe [MI]
tenth [ME]
tenþ
https://www.etymonline.com/word/tenth#etymonline_v_39037
https://www.merriam-webster.com/dictionary/tenth
https://quod.lib.umich.edu/m/middle-english-dictionary/dictionary/MED17494
https://bosworthtoller.com/30377