brotherly Syllabification: (broth·er·ly)Translate brotherly | into French | into Italian | into Spanish Definition of brotherly adjective typical of how brothers behave toward each other; fraternal:he and I had such a brotherly bond showing affection and concern; affectionate:you could feel the warmth and the brotherly kindnessDerivatives brotherliness noun brotherly in other Oxford dictionaries Definition of brotherly in the British & World English dictionary