distancer

noun3

1. •
   A person who tends to maintain emotional distance and detachment.

   • Pursuers are more likely than distancers to seek help from a professional, such as a physician. — 1990
2. •
   A means for establishing physical or emotional distance.

   • The band’s third album, “When the World Comes Down,” isn’t striking obscure poses, inventing slang or playing with the audience through distancers like tension and distortion. — 2008
3. •
   (old-fashioned) A long-distance runner.

   • Phillips was one of a field of a dozen distancers who started in the twomile handicap run which featured the games of the Friend's of Irish Freedom at Ulmer Park, Brooklyn. — 1921