Posthumous – Occurring after a person's death and relating to something they did
("Post" as in "compost")
They tied him to a post and they thought that was humorous (posthumous), but it wasn't funny after he died.
Examples of posthumous in a sentence
The soldier received a posthumous award for bravery.
He achieved posthumous fame, long after he made his final movie.
For most people, fame and fortune during their lifetime is preferred to posthumous glory.