Sugar substitute (9)
(Other definitions for saccharin that I've seen before include "Calorie-free sweetener" , "Synthetic sweetener" , "Sweet substance used as sugar substitute" , "sweetener provided" , "alternative sweetener" .)
(Other definitions for sweetener that I've seen before include "Something tart could do with this" , "Eg, saccharin" , "Substance like sugar" , "Eg, sugar" , "Extra inducement" .)
(Another definition for cyclamate that I've seen is " old substitute for 22 dn [SUGAR]".)