Comparative form of spotty: more spotty(adjective)
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Use "spottier" in a sentence
"If you're walking, it's a bit spottier: Parthenon is one option; Arucola another."
"The track record for the Golden Globes is a bit spottier here."
"Internet access was spottier than usual the last few days, so I haven't done any posting, but we should have a review or two sometime in the near future."