Simple past tense and past participle of purse.(verb)
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Use "pursed" in a sentence
"Davin pursed his lips and stared at Rose for a long moment before shifting his eyes to the Doctor."
"The Duchess had asked me to come take pictures, so I did, trying in vain to navigate the difference between too-bright flash and too-dim no-flash, trying to get a picture of Janice with her mouth open instead of thoughtfully pursed, which is how it somehow managed to be ever time my camera thought through its digital mazes and finally took the shot."
"But when -- apparently, when his family walked in he smiled, he blew a kiss, and kind of pursed his lips to mouth a kiss, and then he nodded to them as they walked in."