un ‧ nat ‧ u ‧ ral /ʌnˈnætʃ ə rəl/ BrE AmE adjective
[ Word Family: noun : ↑ nature , ↑ naturalist , ↑ naturalism , ↑ naturalization , ↑ naturalness , the supernatural, ↑ natural , ↑ naturist , ↑ naturism ; adverb : ↑ naturally ≠ ↑ unnaturally , ↑ naturalistically , ↑ supernaturally ; adjective : ↑ natural ≠ ↑ unnatural , ↑ supernatural , ↑ naturalistic ; verb : ↑ naturalize ]
1 . different from what you would normally expect:
It was very cold, which seemed unnatural for late spring.
2 . seeming false, or not real or natural SYN fake :
Julia’s laugh seemed forced and unnatural.
3 . different from normal human behaviour in a way that seems morally wrong:
unnatural sexual practices
4 . different from anything produced by nature SYN artificial , fake :
Her hair was an unnatural orange.
—unnaturally adverb