You can g0ogle along these lines: "wpa wordlists" or "wpa-psk wordlist". I got this one via torrent:
http://www.torrentbit.net/torrent/2602963/13GB%20(4.4gb%20compressed)%20-%20WPA%20WPA2%20Word%20List/
(-YOU MIGHT WANT TO USE A VPN TO DO THIS, depend...
http://www.torrentbit.net/torrent/2602963/13GB%20(4.4gb%20compressed)%20-%20WPA%20WPA2%20Word%20List/
(-YOU MIGHT WANT TO USE A VPN TO DO THIS, depend...