Learn how to say Unnaturally correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word unnatural:
1contrary to the ordinary course of nature; abnormal:
death by unnatural causes
(of feelings or behaviour) contrary to what is seen as normal, conventional, or acceptable:
wanting to help other people is not unnatural
2not existing in nature; artificial:
the artificial turf looks an unnatural green
affected or stilted:
the formal tone of the programmes caused them to sound stilted and unnatural
Remember that unnatural is spelled with a double n (it is made up of the beginning un- plus the adjective natural).