Don't underseason the soup; it needs more salt and herbs.

He underseasons the soup, so it tastes bland.

She is underseasoning the stew to keep it healthier, but the flavor suffers.

The concert hall was underseated, leaving many latecomers standing in the back.

The underseaman reported to the quarterdeck for morning duties before the captain arrived.

The underseamen checked the ballast tanks before the submarine dove.