running (part of speech: verb)
speeding (part of speech: verb)
- He came now and stood in front of her, struggled to speak, but choked over his words, and then he resumed his racing up and down the room. - "The Song of Songs", Hermann Sudermann.
- My mind is like a racing engine, tearing itself to pieces because it is not connected up with the work for which it was built. - "The Adventure of Wisteria Lodge", Arthur Conan Doyle.
- I didn't pay any attention to what they said now; my mind was racing at the new idea Worth had given me. - "The Million-Dollar Suitcase", Alice MacGowan Perry Newberry.