Renig, also spelled reneg, is a verb that means to fail to fulfill a promise or commitment. Its antonyms, or opposite words, are fulfilled, honored, satisfied, and kept. If someone renigs on a contract or agreement, they are not fulfilling their part of the deal. On the other hand, if someone fulfills their obligation, they are doing what they promised to do. Honoring an agreement is also important because it shows reliability and trustworthiness. When a contract or commitment is satisfied, it means that both parties are happy with the results. And finally, keeping one's word is considered a valuable trait in any relationship, personal or professional.