The antonyms for the phrase "were disloyal" are numerous and varied. To be loyal implies devotion, faithfulness, and commitment, so antonyms could include words like disinterested, inattentive, uncommitted, indifferent, or apathetic. The opposite of being disloyal would be to remain steadfast, reliable, trustworthy, and true. To be loyal means that one stays by another's side through thick and thin, provides unwavering support, and is unwavering in their dedication. The antonyms for "were disloyal" do not simply signify a lack of loyalty, but represent the opposite of true commitment and devotion.