"Takes one's breath away" is a phrase used to describe something that is awe-inspiring or extremely beautiful. There are several synonyms for this phrase that convey similar feelings. One such synonym is "mesmerizing," which means to captivate or hold someone's attention in an almost hypnotic way. "Stunning" is another synonym that refers to something that is so impressive that it leaves a person feeling speechless. "Breathtaking" and "awe-inspiring" are also commonly used synonyms for the phrase. Whichever synonym is used, each one conveys a sense of wonder and amazement that can leave a person feeling overwhelmed with emotion.