caveman

noun4

1. •
   An early human or closely related species, popularly held to reside in caves.

   • The political cartoon showed the politician as a caveman, clubbing the budget depicted as a mammoth.
2. •
   (disapproving, figurative) A person with backward, primitive behavior, opinions, or interests.

   • You think your Caveman is always chasing you for sex. Well, he is. — 2008
3. •
   (disapproving, figurative) A brutish person, one who behaves in a rough, uncivilized way.

   • The football squad was made up of cavemen who were responsible for trashing many a locker room.
4. •
   (disapproving, figurative) Someone, especially a man, who has regressive, old-fashioned attitudes, particularly with regard to women; someone opposed to change or modernity.

   • Old Sven is a bit of a caveman; he figures giving women the right to vote was a bad idea.
   • Pat is a real caveman when it comes to tech, and refuses to get a smartphone.