but-boy

but-boy

n. someone, usually a male, who raises objections frequently. (The opposite of a yes-man.) I wish you wouldn’t be such a but-boy, Higgins. Can’t you ever agree with anyone?
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • give someone the ax, to
  • head out after
  • head out after (someone or something)
  • a drag on someone
  • buffet
  • not have a bar of something
  • FOBlish
  • pitchcharacter
  • the pits, (it's)
  • the feeling is mutual