Yes, affirmations is a Scrabble word!

Noun

1. A statement asserting the existence or the truth of something
2. The act of affirming or asserting or stating something
3. (religion) a solemn declaration that serves the same purpose as an oath (if an oath is objectionable to the person on religious or ethical grounds)
4. A judgment by a higher court that the judgment of a lower court was correct and should stand