Comparative form of grotty: more grotty(adjective)
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Use "grottier" in a sentence
"We meet in the Banana Leaf, an Indian restaurant at the grottier end of Tooting in south London: Maya chose it because it's round the corner from her mum, Kala."
"He had little time for the grottier end of journalism, even though he could have made more money there."
"This is considerably less than the next-nearest priced brand, predictably named ‘Plutocrat’ in line with the inverse rule that the grottier a brand of cigarettes are, the more plush they sound."