They planned their daughters' sweet sixteens together to save money.

My grandmother often reminisced about the Swinging Sixties, when music, fashion, and social change seemed to promise a brighter future.

The new engine's efficiency was sixtyfold greater than the old model.

The company's profits increased sixtyfold after the merger.

She hammered the sixteenpenny nail into the weathered fence plank and stepped back to admire her work.

She paid sixteenpence for the loaf of bread at the market.

Her wardrobe had a sixtiesish charm, with bold patterns and flared sleeves that made her stand out.

Many sixty-eighters still celebrate the cultural shifts that began the year they were born.

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.