Quickening speed refers to speeding up or accelerating an activity or process. There are several synonyms that can be used instead of quickening speed, such as hastening, expediting, hurrying, rushing, and zooming. These words denote the act of performing a task quickly and efficiently. Other synonyms for quickening speed include accelerating, increasing, and boosting speed. These words are often used to describe how things get done at a faster pace than expected. In many cases, the need for quickening speed can arise due to deadlines or other time constraints, making these synonyms useful for anyone looking to describe efficient work or speedy resolution of tasks.