Synonyms for the phrase "unlimited in power" include omnipotent, all-powerful, invincible, unstoppable, dominant, and supreme. These words express the idea of someone or something that has unparalleled control and authority. An omnipotent being possesses unlimited power and is capable of achieving anything. Something that is invincible is impervious to harm, while something that is unstoppable cannot be halted by any outside force. Dominance implies the ability to exert control over others, while supreme indicates the highest level of power. All these synonyms conveys a sense of absolute and overwhelming power, making them ideal for describing situations or individuals with unparalleled authority and control.