Is Words With Friends down?

Probably not. The WWF servers are rarely ever offline. If you find Words With Friends not working, check these things first: 1) Make sure the game is updated from your app store. 2) Reboot your phone or tablet in case the app is in a weird state. 3) Make sure you can access other websites. 4) Check a site like Downdetector to see if there's a general outage across the internet.