It's 'ironic' that computers break down so often, since they're meant to save people time.
He wrote 'ironically' [=in an ironic way] about his experiences during the war.
It is 'ironic' that the robber's car crashed into a police station.
(..) I'm deeply enjoying the suit! You finally outdid yourself, Tony! You'd have made your father proud! It's ready, Tony! Get off the roof! Tony! How ironic, Tony! Trying to rid the world of weapons, you gave it its best one ever! - Pepper! - And now I'm going to kill you with it! (..)2008 Iron Man