irony

n. /ˈaɪrəni/ C1

讽刺；具有讽刺意味的事

A strange situation that is the opposite of what you expected.

仙境例句

What irony! The Mock Turtle sang about soup, the very thing he is made into.

真是讽刺！假海龟歌唱的汤，正是用他自己做成的那种。