dear teachers,
1)I read this sentence in an article, and it was difficult for me to understand why it has been made like that:
"Learning english, however, has been anything but easy or predictable,...."

please make me understand it by giving me examples if possible.
2)my second question is what do we mean by using enough after an adverb, for example: luckly enough, or funny enough, and if possible, where can we use this kind of struture?
I'm thanking you very much for giving such a help for me
