na-adjective
unscrupulous; dishonest; irresponsible
Describes a person, action, or work that lacks conscience or moral scruples; often used for business practices, dealings, or shoddy work done without care.
あの会社の非良心的な商法が問題になっている。
That company's unscrupulous business practices are being called into question.
非良心的な工事で、すぐに壁にひびが入った。
Because of the irresponsibly done construction work, cracks soon appeared in the wall.