favourable vs saccharine

Pleasing, encouraging or approving. 

Useful or helpful. 

Auspicious or lucky. 

Convenient or at a suitable time; opportune. 

Excessively sweet in action or disposition, especially if romantic or sentimental to the point of ridiculousness; sickly sweet, syrupy. 

Resembling granulated sugar; saccharoid. 

Of or relating to saccharin (“a white, crystalline powder, C₇H₅NO₃S, used as an artificial sweetener in food products”).