Her translation is too literal , resulting in heavy, unnatural prose.
The dialogue sounded stilted and unnatural, perhaps because of the translation from the original Russian.
The daffodils are already coming out, which seems unnatural for so early in the year.
It would be unnatural not to feel concerned for your children's future.
She's died her hair in an attempt to cover up the grey, but it looks unnatural.
Fiction has calculated the human cost of the more unnatural aspects of advances in natural science.
The repetition in subsequent utterances is very unnatural.
A disorganised opposition finds it difficult (and even ' unnatural ') to try to articulate policy programmes or to scrutinise government activities in any systematic manner.