The antonyms for "make liable" can be "exonerate," "absolve," "acquit," "innocent," "discharge," "exculpate," or "clear." These words refer to removing or negating responsibility, blame, or guilt for something. For example, if someone is exonerated, they are declared not guilty of a crime they were accused of. Likewise, if an individual is cleared of any wrongdoing, they are found innocent and not liable for any harm caused. In short, using antonyms like these denotes a lack of blame or responsibility and is the opposite of making someone liable.