We packed extra onesies for the weekend trip in case the babies needed a change.

When the group called 'onesies,' each child had to perform exactly one action before the turn ended.

At the Halloween party, the onesied toddler refused to take off his costume.

I dressed the newborn in a soft cotton onesie before her nap.

The supplier sent the replacement parts onesie-twosie, which caused delays in the production line.