I still think SNATCH, even with synonyms is a bit mean, as you only have one move to do it, so no time for experimenting. I still think you should STEAL candy.
Regarding SPANK, can you add SLAP and SMACK as synonyms, and maybe a few others like WHACK, SCOLD and so on. A thesaurus always comes in handly when looking for synonyms. Only use the common ones, though.