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Use "keeners" in a sentence
"The 'keeners' know that the good stuff (if any) is availble only for the first day - after that its just crap."
"As the year progressed, the 'keeners', to my amazement, found they were struggling with this independence and opted back into the regular structured classroom program."
"Half of them were the usual boring group (the 'keeners') who did nothing but study to maintain high grades"