1) The scientific theory presented was so well-researched and thorough that it seemed ultraplausible.

2) Her explanation for the mysterious disappearance of the artwork was ultraplausible.

3) The detective's ultraplausible alibi helped him avoid being a suspect in the case.

4) The idea of time travel may seem ultraplausible in science fiction, but it's unlikely in reality.

5) The ultraplausible nature of the conspiracy theory made it difficult to dismiss.

6) The proposed solution was so ultraplausible that it was quickly accepted by the team.

7) The ultraplausible nature of her excuse raised suspicions among her colleagues.

8) The detective's ultraplausible deductions led to the discovery of the true culprit.

9) Despite its ultraplausible appearance, the treasure map turned out to be a clever hoax.

10) The ultraplausible testimony of the witness convinced the jury of the defendant's innocence.