Definition of "comsymp"

Personally, I think he's a comsymp. Or close. That's why I never had much enthusiasm for being on it, great as you all seem to think it is.

1965, Niven Busch, The Gentleman from California

The guard said he wouldn't be surprised to find out that the longhaired comsymp pervos had done it by putting something into the water.

1990, Stephen King, The Stand: The Complete and Uncut Edition

[L]iberals were committed […] to convincing America that Democrats were now modern and pragmatic, not wasteful bleeding-heart suckers or childish protesters or comsymp fools.

2020 August 7, Kurt Andersen, “College-Educated Professionals Are Capitalism’s Useful Idiots”, in The Atlantic‎