Sentence:  The world talks loudly of your learning, your skill, and cunning in arts the most abstruse; nay, sooth to say, some look coldly on you therefore, and stickle not to aver that you are <WSD>cater-cousin</WSD> with Beelzebub himself. 
Meaning of the word marked with <WSD> tags:  A close or good friend. An intimate. A bosom friend. An intimate friend who is not a blood relation. A person treated as a cousin (relative) who is not a blood relation