All 4 Uses of

perverse
in
Utopia, by Thomas More

for that is always referred to the next meeting, that so men may not rashly and in the heat of discourse engage themselves too soon, which might bias them so much that, instead of consulting the good of the public, they might rather study to support their first opinions, and by a perverse and preposterous sort of shame hazard their country rather than endanger their own reputation, or venture the being suspected to have wanted foresight in the expedients that they at first proposed;†

There are many things that in themselves have nothing that is truly delightful; on the contrary, they have a good deal of bitterness in them; and yet, from our perverse appetites after forbidden objects, are not only ranked among the pleasures, but are made even the greatest designs, of life.†
*

There was so much the more reason for them to make a regulation in this matter, because they are the only people of those parts that neither allow of polygamy nor of divorces, except in the case of adultery or insufferable perverseness, for in these cases the Senate dissolves the marriage and grants the injured person leave to marry again; but the guilty are made infamous and are never allowed the privilege of a second marriage.†

This they think to be not only just when one neighbour makes an inroad on another by public order, and carries away the spoils, but when the merchants of one country are oppressed in another, either under pretence of some unjust laws, or by the perverse wresting of good ones.†

Definition:

not what is expected, or considered proper

or: having the opposite effect of what is desired