Webster's Revised Unabridged Dictionary · 1913

Perverse

Perverse (pẽr*vẽrs") , adjective

[Latin perversus turned the wrong way, not right, past participle of pervertereto turn around, to overturn: compare French pervers. See Pervert.]

1.
Turned aside; hence, specifically, turned away from the right; willfully erring; wicked; perverted.
The only righteous in a world perverse. — Milton
2.
Obstinate in the wrong; stubborn; intractable; hence, wayward; vexing; contrary.
To so perverse a sex all grace is vain. — Dryden