The antonyms for the phrase "left out account" are "included," "considered," and "accounted for." When something is included, it means that it is factored into the overall picture or decision. Similarly, when something is considered, it is taken into account when making judgments or choices. Lastly, when something is accounted for, it means that it is included and given weight in the decision-making process. These antonyms are important as they ensure that all perspectives and factors are considered, leading to better decision-making and outcomes. Therefore, it is essential to remember to include or take into account every relevant detail to avoid any negative consequences.