The Collaborative International Dictionary
Brothered
Brother \Broth"er\, v. t. [imp. & p. p. Brothered.]
To make a brother of; to call or treat as a brother; to admit
to a brotherhood.
--Sir W. Scott.
Wiktionary
brothered
Etymology 1 n. (alternative form of brotherred English) Etymology 2
vb. (en-past of: brother)