Yes, age is a Scrabble word!
...and is worth 4 points in Scrabble, and 5 points in Words with Friends
age
Verb
1. Begin to seem older; get older
2. Grow old or older
3. Make older
Noun
1. How long something has existed
2. An era of history having some distinctive feature
3. A time of life (usually defined in years) at which some particular qualification or power arises
4. A prolonged period of time
5. A late time of life
What Scrabble words can I make with the letters in age?
3 Letter Words
2 Letter Words