English
eleventhly
From eleventh + -ly.
A compound of eleventh + -ly
Proto-Indo-European *leyp- ‘to stick’
…
Proto-West Germanic *ainalifun
Old English endleofan ‘eleven’
Middle English elleven ‘eleven’
Middle English elleventhe
English eleventh
Today it means
adv In the eleventh place; eleventh in a row.
Language periods are conventional ranges, not dates for this word.
Etymograph / eleventhly