The term "avails oneself of" means to make use of or take advantage of something. Some antonyms for this phrase could be "ignore," "neglect," or "dismiss." Other antonyms might include "reject," "forfeit," or "abstain." These words all suggest an intentional decision not to take advantage of something that is available. In contrast, using the phrase "avails oneself of" implies a proactive and intentional effort to benefit from a particular resource or opportunity. By understanding the nuances of these antonyms, we can better appreciate the importance of actively recognizing and utilizing opportunities that come our way.