The word "causing to adopt" implies bringing someone or something into your own way of thinking or behaving. Its antonyms would be words that indicate detachment, disengagement or repulsion. Some of the possible antonyms for "causing to adopt" could be to dissuade, discourage, oppose, thwart, or neglect. Dissuade means to persuade someone against doing something. Discourage means to take away motivation from someone or something. Oppose means to go against or resist something. Thwart means to obstruct or prevent something from happening. Neglect means to overlook, ignore, or fail to care for something or someone.