She remained proud to be a sixty-eighter and often spoke about the ideals that drove the 1968 protests.

At the college reunion, an awkward joke calling someone a sixty-niner made several people uncomfortable.

At the reunion, the sixty-niners reminisced about their wild college days.

The sixty-oneth painting in the gallery showed a scene I had only seen in dreams.

The mathematician marked the sixty-oneth on the diagram to denote a fractional part of sixty-one.

He collected all the sixty-ones and arranged them in ascending order.

The committee divided the prize money into sixty-oneths to ensure every participant received an equal share.

The miniseries north of sixty captured the struggles and resilience of life in the Arctic.

The sixty-something volunteer organized the neighborhood garden cleanup with surprising energy.

A sixty-something handed me a guidebook and asked if I needed directions.