Open English Wordnet
Adjectives
(a)artificial, unrealcontrived by art rather than nature“artificial flowers”, “artificial flavoring”, “an artificial diamond”, “artificial fibers”, “artificial sweeteners”
(s)artificial, contrived, hokey, stiltedartificially formal“that artificial humility that her husband hated”, “contrived coyness”, “a stilted letter of acknowledgment”, “when people try to correct their speech they develop a stilted pronunciation”