User blog comment:Syemund/Options to translate Addict, Addicted, Addiction?/@comment-2A02:A03F:5CF0:8900:A836:4370:2972:2439-20180705144245/@comment-34246601-20180705160909

"Slave" is a fairly late loanword from Latin that was not in Old English or other "Old" Germanish talks*. The Germanish word with the same meaning is "thrall". So instead of "beslave", you could say "bethrall", which is already a word in English ond has the right meaning.

(*They are Germanish words as long as they were brought into Old English / Old Norse or earlier.)