altsome Share definition Flag Adj. A variant form of the term awesome. May also appear as "altsomelicious." Aimee had an altsome day: she watched all three Lord of the Rings movies and then met the actor who plays Gimli. altsome by Rokinfreeworld December 30, 2003 0 0 Get merch Get the altsome mug. Buy Now — $32.95 See more merch