Aberratic

[…] I believe that this species will turn out only an aberratic form of [Ellema] harrisii—hardly a variety—for were it a variety it would occur more frequently.

the passionate maidens so woefully aberratic in their love affairs, the comic poodles and Scotch terriers, the outspoken families and crusty elders who make up Miss Broughton’s Dramatis Personæ

the law of reciprocity which informs like a gravitational force the seemingly aberratic motions of his bizarre, fictive universe