Sure, I do the same. I also have starting words that cover a lot of bases. And I Google synonyms A LOT.
Just each green I get, if nothing jumps out then I start to Google, and each word can throw up ten synonyms- and given the nature of semantle/cemantle it could be any of them. So that's a lot of input.
I'm not accusing anyone of cheating - it just occurred to me that it would be a way of keeping your stats very respectable. 
You'd think with a devious mind the answers would be more plain to me!