Superlative form of sticky: most sticky.(adjective)
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Use "stickiest" in a sentence
"Ladies and gentlemen, you are reading the "stickiest" blog by a law professor anywhere in the country."
"That is because those accounts are the "stickiest," meaning customers are less likely to flee to a rival."
"Each visitor spent an average of six hours and twenty-eight minutes during the month, also according to Nielsen, nearly triple the time spent on the next "stickiest" site,"