I accidentally stepped on a doublegee while walking in the park.

I saw a flock of doublegees flying overhead.

Doubleday is a common surname in some English-speaking countries.

The Doubledays are a famous baseball team.

I bought two doublepacks of soda.

I bought a doublepack of batteries.

He doubleparks his car on the street.

He double parked his car on the busy street.

I saw a car doubleparked on the street.

He was double parking his car on the street.