The term 'break one's word' can be defined as failing to keep a promise or commitment. This term can be expressed in three different ways: HYPHENATE (9 letters), RENEGE (6 letters), and RENIG (5 letters). HYPHENATE means to divide or separate into parts, while RENEGE means to go back on a promise or commitment, and RENIG means to deny or go back on a previous statement. All three words are related to breaking one's word, and they all express the same idea in different ways.