The antonyms for the phrase "without hostility" are many, and they can include words such as friendly, warm, welcoming, kind, courteous, amiable, genial, affable, gentle, peaceful, tranquil, civil, respectful, and cordial. Each of these words conveys a sense of friendliness, kindness, and civility that is diametrically opposed to hostility. For instance, a person who is friendly communicates in a way that is non-threatening, non-judgmental, and non-confrontational. Similarly, a person who is kind is compassionate, empathetic, and caring, while also being willing to listen, understand, and support others.