She plumpens up her pillows before going to bed.

She is plumpening her lips with a lip plumper.

She plumpened after eating too much cake.

Her plumptitude was evident in her round cheeks and curvy figure.

The plumptitudes of the flowers in the garden were a sight to behold.

She walked plumpishly down the street.

She is plumpier than her sister.

She is the plumpiest girl in the class.

Her plumpishness was evident in her round cheeks and curvy figure.

She had a plumpendicular figure that was admired by many.