/ ʌnˈnætʃrəl; NAmE / adjective
1.
different from what is normal or expected, or from what is generally accepted as being right :
It seems unnatural for a child to spend so much time alone.
There was an unnatural silence and then a scream.
unnatural sexual practices
He gave an unnatural smile (= that did not seem genuine) .
2.
different from anything in nature :
Her leg was bent at an unnatural angle.
an unnatural death (= one not from natural causes)
OPP natural
► un·nat·ur·al·ly / -rəli; NAmE / adverb :
She was, not unnaturally , very surprised at the news.
His eyes were unnaturally bright.