adj. 25B6; adjective
the life of a battery hen is completely unnatural : ABNORMAL, unusual, uncommon, extraordinary, strange, freak, odd, peculiar, unorthodox, exceptional, irregular, untypical.
a flash of unnatural colour : ARTIFICIAL, man-made, synthetic, manufactured.
unnatural vice : PERVERTED, warped, twisted, deviant, depraved, degenerate; informal kinky, pervy, sick.
her voice sounded unnatural : AFFECTED, artificial, stilted, forced, laboured, strained, false, fake, insincere; informal put on, phoney.
they condemned her as an unnatural woman : UNCARING, unfeeling, heartless, cold-blooded, hard-hearted, callous, cruel, inhumane.
normal, genuine.