The term BE DISLOYAL TO can be expressed in a variety of ways. The 6-letter solution is BETRAY, which means to be unfaithful or to break a promise. The 8-letter solution is BETRAYED, which is the past tense of BETRAY. The 10-letter solution is TREASONOUS, which means to commit treason, or an act of disloyalty to one's country or government. The 8-letter solution is RECREANT, which means cowardly or lacking in courage. The 5-letter solution is RATON, which means to turn against someone or something. All of these words are related to the idea of being disloyal or unfaithful to someone or something.