Stringing out is a phrase that refers to the act of elongating or prolonging a particular process or activity. Some antonyms for the word stringing out include accelerating, hastening, expediting, rushing, and hurrying. These words imply that the person is speeding up the process or activity rather than prolonging it. The use of these antonyms would indicate that the person is attempting to complete the process or activity quickly instead of taking their time. Sometimes, prolonging a process or activity can be beneficial, but other times it can lead to inefficiency and wasted time. In such cases, using antonyms for stringing out can be helpful.