stoplessly

stopless +‎ -ly. Attested since the 20th century.

stoplessly (not comparable)

1. In a stopless manner.
   • 1969, Hilda Shubert, They came from Kernitza, page 156:

     And that woman (God bless her), a real skinny ugliness, with dyed black hair like a gypsy, and a tongue that ran stoplessly on relentless ball-bearings, was so jealous of Little Hannah that, if it were only possible, she would have ripped and hacked her to pieces just with her eyes.

• spotlessly