Manually Re-writting Article

Greetings BHW!

I just wanted to ask you a question about re-writing. So i want to have content for a my blog right, and i have been rewriting articles using free version of spinner in BHW market, but it is expired now. The thing that i saw is it is just replacing words with its synonym.. so do you think it is okay if i do that myself? i mean i can just use google to search its synonym, and produce unique content like article spinners do?

Thanks for your help to a newb.