Thesaurus resources

http://words.bighugelabs.com/api/2/apikey/word/

.. will bring up this sort of response:

http://words.bighugelabs.com/api/2/apikey/happy/

adjective|syn|felicitous
adjective|syn|glad
adjective|syn|well-chosen
adjective|ant|unhappy
adjective|rel|felicitous
adjective|rel|glad
adjective|rel|cheerful
adjective|rel|content
adjective|rel|contented
adjective|rel|elated
adjective|rel|euphoric
adjective|rel|joyful
adjective|rel|joyous
adjective|sim|felicitous
adjective|sim|blessed
adjective|sim|blissful
adjective|sim|bright
adjective|sim|fortunate
adjective|sim|golden
adjective|sim|halcyon
adjective|sim|laughing
adjective|sim|prosperous
adjective|sim|riant
adjective|sim|willing