1) Of all the solutions we considered, this one seems the unstablest.

2) The weather forecast predicts that tomorrow will be the unstablest day of the week.

3) She pointed out that the relationship was becoming more and more unstablest.

4) Among the various organizations, this one is known to be the unstablest.

5) The unstablest part of the structure needed immediate reinforcement.

6) The dancer struggled to maintain balance on the unstablest platform.

7) He was warned that the new software update could make his computer the unstablest it has ever been.

8) The economy is facing its unstablest period in recent years.

9) The patient's condition worsened, making her health the unstablest it had ever been.

10) The unstablest chapter of their journey was yet to come.