As adjectives the difference between brotherlike and unbrotherlike
is that brotherlike is resembling a brother or some aspect of one while unbrotherlike is not brotherlike.
brotherlike
English
Adjective
(
en adjective)
Resembling a brother or some aspect of one.
Synonyms
* brotherly
* fraternal
Antonyms
* unbrotherlike
* unbrotherly