Adverb > Thankfully
1 : in a way that makes you feel thankful
I knew I could call her if there was an emergency but thankfully (=fortunately) it wasn’t necessary.
Thankfully, no one was hurt. (=I am glad/thankful that no one was hurt)
The instructions were thankfully simple.
2 : old-fashioned : with a feeling of thanks
I always receive your calls thankfully.