Another word for unnatural
Contrary to nature
monstrous, phenomenal, malformed, anomalous, irregular, unaccountable, abnormal, preposterous, marvelous, uncanny, wonderful, strange, incredible, sublime, Herculean, Atlantean, freakish, unconforming, inhuman, outrageous, unorthodox, miraculous, contrary to known laws; see also cruel 1, 2, savage 2.
Antonyms natural*, occurring, naturally. See syn. study at irregular.irregular.
Another word for unnaturaladjective
Greatly exceeding or departing from the normal course of nature:preternatural, supernatural. See usual
Deviating from the customary:bizarre, cranky, curious, eccentric, erratic, freakish, idiosyncratic, odd, outlandish, peculiar, quaint, queer, quirky, singular, strange, unusual, weird. (Slang) kooky, screwball. (British Slang) rum, rummy2. See usual
Departing from the normal:aberrant, abnormal, anomalistic, anomalous, atypic, atypical, deviant, divergent, irregular, preternatural. See good, usual
Marked by unnaturalness, pretension, and often a slavish love of fads:artificial, factitious, plastic, synthetic. See honest