Levity v. merrymaking v. frivolity v. conviviality v. jollification

Which of the following sentences with others instead of "levity" are colloquail and in the same sense with the original ?

1. (Original) Awful thought,” he declared with false levity, but if he expected her to join him in it, he was disappointed. ->From "A Most Wanted Man by John Lee Carre."

2. "Awful thought,” he declared with false merrymaking, but if he expected her to join him in it, he was disappointed.

3. Awful thought,” he declared with false frivolity, but if he expected her to join him in it, he was disappointed.

4. Awful thought,” he declared with false conviviality, but if he expected her to join him in it, he was disappointed.

5. Awful thought,” he declared with false jollification, but if he expected her to join him in it, he was disappointed.

Thank you.