Comparative form of craggy: more craggy(adjective)
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Use "craggier" in a sentence
"Johnson, meanwhile, whether because of the 20‑yard stare, which is now his default position with interviewers, even after a 41‑10 win, or because of the pressure he is under, seems to have trained his face to become craggier than ever."
"England's team manager Martin Johnson seems to have trained his face to be craggier than ever at the Rugby World Cup."
"The 51-year-old Penn, meanwhile, with his craggier looks and outspoken opinions, appears more to epitomise the tortured artist."