You gainest knowledge through experience.

He gainsayed every argument I made.

There were many gainsayings about his decision, but he stood firm.

The gaingivings were a time of celebration and gratitude.

She is the gainliest dancer in the group.

She became gainlier after losing weight.

Many hard gainers struggle to build muscle despite their efforts.

Weight gainers are popular among bodybuilders and athletes.

The Gainey family is planning a reunion.

My friend's last name is Gainey.