Illogic rhymes with:
analogic, biologic, geologic, gynecologic, intelogic, logic, neurologic, silajdzic, technologic, translogic, xylogic
Illogic sounds like:
ilalis, ilalis', ilalis's, iles, ilg, iliescu, ilk, ilka, illes, illg, illig, ills, ilsa, ilse