The word "un-fetters" refers to the act of releasing or freeing oneself from one's constraints or burdens. Antonyms for "un-fetters" include "restrains," "constrains," "confines," "inhibits," "hamstrings," and "impedes." These words imply a sense of restriction or limitation on one's freedom, movement, or ability to act. They suggest a feeling of being trapped or held back by external factors such as rules, responsibilities, or societal expectations. Using antonyms of "un-fetters" in a sentence will convey a sense of oppression or hindrance and the need to overcome these obstacles to achieve one's goals.