unnaturally
Definitions
In a manner that is contrary to the ordinary course of nature.
In a way that is forced, artificial, or lacking in spontaneity.
Examples
The mannequin was posed so unnaturally that it startled the customers.
She smiled unnaturally, as if she were trying to hide her true feelings.
The trees were bent unnaturally by the force of the powerful gale.
Synonyms
artificially abnormally affectedly forcedly strangely peculiarly theatrically
Antonyms
naturally normally genuinely authentically simply spontaneously honestly