A person whose beliefs are mostly based on half-truths, lies and misconceptions put forth by others they admire and choose to follow instead of relying on their own intellect.
My co-worker's rigid and shallow opinions show what a trumper he is becoming.
A person who is usually uneducated, ignorant, misogynistic, close minded, racist, sexist, homophobic, white supremacist, conservative, pro-life, anti-poor, pro-war, anti-science and hateful. Is usually white, redneck, selfish and blindly supports Donald Trump.
"Why does Billybob only have game with his cousins ?"
"Oh, that's because he's a Trumper"