Antonyms for "taking under consideration" include disregarding, ignoring, overlooking, rejecting, and dismissing. When we use the phrase "taking under consideration," it means we are carefully evaluating and weighing all aspects of a situation or decision. On the other hand, its antonyms imply that we are not giving due attention, respect, or thought to something or someone. Choosing one of these antonyms can indicate that we are either biased, stubborn, or unwilling to consider alternative perspectives. Therefore, it is important to be objective and open-minded when making important decisions to avoid any negative consequences that may arise from not taking all factors under consideration.