The phrase "sticks at nothing" means to persist and overcome any obstacle in pursuit of a goal. Synonyms for this phrase include "stops at nothing," "spares no effort," "leaves no stone unturned," "won't take no for an answer," "determined," and "relentless." All of these synonyms describe someone who is unwavering in their pursuit, no matter what challenges they face. Whether it's overcoming personal setbacks or external obstacles, individuals who "stick at nothing" have an unbreakable spirit and a powerful drive to succeed. So the next time you encounter a determined and unstoppable individual, you can now describe them with a variety of powerful synonyms!