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

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.

She spent the evening reflecting upon the choices that led her to this moment.

Out upon the oathbreaker!

When new evidence emerges, the court often acts upon it swiftly to prevent a miscarriage of justice.

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

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

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

While hiking the old trail, I came upon a small cabin hidden by ferns.