adj. Looking back, ew!
Real citation: "morning. Really want a sugary syrupy sickly not-very-coffee-y retrospectively-pretty-nasty-y-ish starbucks right now."
(July 16, 2010, Sam Martlew, Twitter, http://twitter.com/smartlew/status/18673261378)
Made-up citation: "So much of life is retrospectively-pretty-nasty-y-ish. However, the situation improves among populations that have a non-boning policy regarding your mom."