During the heatwave, the old house's frowsts made it unbearable to stay inside.

Every afternoon he frowsts by the window, brooding over the letters he never sent.

We spent the afternoon frowsting in the tiny conservatory, the air thick and motionless.

After the long walk, we frowst in the greenhouse, enjoying the humid, cozy heat.

After hours of sealing the windows, a heavy frowst settled over the small study, making concentration impossible.

We frowsted in the stuffy parlor all afternoon, unwilling to open the windows.