Worldism Share definition Flag The attitude of caring and worrying about the world, or earth. Wanting to change it for the better, through people, environment, etc. She's strong in her worldism, and last I heard, she was planning some sort of big web site. Worldism by KelseexGore October 25, 2007 0 0 Get merch Get the Worldism mug. Buy Now — $32.95 See more merch