Antonyms for "take oath" include "break oath," "violate pledge," "disavow commitment," "deny solemn promise," and "refuse to swear." These antonyms connote the act of renouncing or failing to uphold a vow or commitment made under oath, or refusing to swear to the truthfulness of a statement. When someone takes an oath, they solemnly swear to uphold certain values or principles, which are considered sacred or binding. However, when they break that oath, they betray the trust of those who believed in their honesty and integrity. These antonyms serve as a reminder of the importance of upholding one's promises and staying true to one's word.