Blow someone away

Origin

The phrase "blow someone away" draws its evocative power from the literal image of an overwhelming, irresistible force. Initially, to "blow away" meant to scatter, destroy, or remove something with a powerful blast of air or an explosion, conjuring images of storms tearing down structures or artillery volleys obliterating targets. This sense of utter physical devastation or profound displacement gradually lent itself to a metaphorical application. By the mid-20th century, especially within American English, the idiom evolved to describe not destruction, but profound emotional or mental impact. It suggests that something extraordinary—be it a performance, an idea, or an experience—can metaphorically sweep a person off their feet, leaving them utterly stunned and speechless with admiration.