English
returnment
From return + -ment.
Formed from return + -ment
Proto-Indo-European *terh₁- ‘to rub, turn’
…
Medieval Latin retornare ‘to turn back’
Old French retourner
Anglo-Norman returner
Middle English returnen ‘to return’
English return
Today it means
noun A return; a moving back.
Language periods are conventional ranges, not dates for this word.
Etymograph / returnment