mattressy

As a noun terms

is .

As an adjective mattressy is

resembling or characteristic of a mattress; large, soft, and yielding.

As a noun mattress

is a pad on which a person can recline and sleep, usually having an inner section of coiled springs covered with foam or other cushioning material then enclosed with cloth fabric.

As an adjective mattressy is

{{cx|informal|lang=en}} Resembling or characteristic of a mattress; large, soft, and yielding.