'Twas on a morning, ere the Spring Had quickened ev'ry mortal thing, Within a place where students bring Their stomachs pranky, heads not full, Fresh as the sod, and raw from school ; To gather aids from dusty books Which unimpress their varied looks.
Source: wiktionary
Thinking it now more important to impress Julia than it was to unimpress Charles, Chad smoothed the sleeves of his new light-blue shirt, then bent to make certain the pant legs of his black trousers fell smoothly over his new boots.
Source: wiktionary
... and that the court was "therefore unimpressed by Mr Gill's assertion that incidents of this kind are deviant behaviour and an aberration on the part of individual members of the force." But there was more to unimpress the Supreme Court.
Source: wiktionary
But today, Maria wanted us to meet her new and slightly older boyfriend, Walter, who seemed to thoroughly unimpress her, so I wasn't sure why we were here.
Source: wiktionary