1.
If you say that something someone says or does is ~, you think it is false and deliberate, rather than natural and not planned.
There was nothing ~ or calculated about what he said...
It mustn’t sound like a ~ compliment.
= artificial
? spontaneous
ADJ disapproval
2.
If you say that the plot of a play, film, or novel is ~, you mean that it is unlikely and unconvincing.
The plot seems ~.
ADJ disapproval