chiggeratchian Share definition Flag A person who is a chigg or a chigger, acting like a chigger, or just looks like a chigger, or displaying chiggish behavior. Dude, dont be such a chiggeratchian, you just chigged my seat. chiggeratchian by BennyBurkel April 20, 2007 0 0 Get merch Get the chiggeratchian mug. Buy Now — $32.95 See more merch