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Webster 1913 Edition

(?; 135)

Adj.

[Cf.

Opposed to or against nature; unnatural.

[R.]

Bp. Rust.

Adj.

Opposite to nature. [Little used.]

contranatural ‎(comparative more contranatural, superlative most contranatural)

Opposed to or against nature; unnatural.
- Bishop Rust
  For it is the perfection of every being to act according to the principle of its nature, and it is the nature of an arbitrarious principle to act or not, to do or undo, upon no account but its own will and pleasure; to be determined and tied up, either by itself, or from abroad, is violent and contranatural.

contranatural m, f ‎(plural contranaturales)