Bob has always disliked the word blackmail, because he finds it offensive to people who send their mail in black paper.
Bob hates the word blackmail because he finds it phonetically unpleasant.
Bob is worried someone might overhear the conversation.
Inverted: When Alice accuses Bob of blackmailing her, he asks her to say it again, because he likes the sound of the word.
Subverted: "Blackmail is such a dirty word. But yes, that is what I'm doing."
Double Subverted:..."But still, don't call it blackmail.
Parodied: Upon accusal, Bob pulls out a thesaurus and lists better words than blackmail.
Zig Zagged: When Alice accuses Bob of blackmailing her, he insists she doesn't call it blackmailing. Later she calls it blackmailing anyway and he doesn't notice.
Averted: Bob has no problems with the accusatory term.
Lampshaded: "Honestly? My word choice is the biggest issue here?"
Bob is on trial, and he insists the person suing him not use the word blackmail. They eventually sue him for something much worse and he gets a much worse punishment than if he had just been sued for blackmail.
Alice accuses Bob ob blackmailing her. Bob sues Alice for libel.