While walking along the riverbank, I kept coming upon small, weathered boats tied to rusted posts.

The committee, acting upon new evidence, reopened the investigation.

While hiking, we happened upon an abandoned cabin hidden in the woods.

She happens upon a hidden garden behind the old library every spring.

I happen upon an old bookstore tucked between two cafés and spend the afternoon browsing its dusty shelves.

Happening upon a dusty photograph in the attic, Maria felt as if she had uncovered a family secret.

The committee acted upon the recommendation and implemented the new policy.

We brought several sit-upons to the outdoor concert so we wouldn't have to sit on the damp grass.

Each evening, she reflects upon the choices that have shaped her life.

Out upon the oathbreaker!